drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of version 2 of the GNU General Public License as
  14  * published by the Free Software Foundation.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  24  * USA
  25  *
  26  * The full GNU General Public License is included in this distribution
  27  * in the file called COPYING.
  28  *
  29  * Contact Information:
  30  *  Intel Linux Wireless <linuxwifi@intel.com>
  31  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  32  *
  33  * BSD LICENSE
  34  *
  35  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  36  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  37  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  38  * All rights reserved.
  39  *
  40  * Redistribution and use in source and binary forms, with or without
  41  * modification, are permitted provided that the following conditions
  42  * are met:
  43  *
  44  *  * Redistributions of source code must retain the above copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  *  * Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in
  48  *    the documentation and/or other materials provided with the
  49  *    distribution.
  50  *  * Neither the name Intel Corporation nor the names of its
  51  *    contributors may be used to endorse or promote products derived
  52  *    from this software without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  55  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  56  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  57  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  58  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  59  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  60  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  61  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  62  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  63  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  64  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  65  *
  66  *****************************************************************************/
  67 #include <linux/kernel.h>
  68 #include <linux/slab.h>
  69 #include <linux/skbuff.h>
  70 #include <linux/netdevice.h>
  71 #include <linux/etherdevice.h>
  72 #include <linux/ip.h>
  73 #include <linux/if_arp.h>
  74 #include <linux/time.h>
  75 #include <net/mac80211.h>
  76 #include <net/ieee80211_radiotap.h>
  77 #include <net/tcp.h>
  78
  79 #include "iwl-op-mode.h"
  80 #include "iwl-io.h"
  81 #include "mvm.h"
  82 #include "sta.h"
  83 #include "time-event.h"
  84 #include "iwl-eeprom-parse.h"
  85 #include "iwl-phy-db.h"
  86 #include "testmode.h"
  87 #include "iwl-fw-error-dump.h"
  88 #include "iwl-prph.h"
  89 #include "iwl-nvm-parse.h"
  90 #include "fw-dbg.h"
  91
  92 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  93         {
  94                 .max = 1,
  95                 .types = BIT(NL80211_IFTYPE_STATION),
  96         },
  97         {
  98                 .max = 1,
  99                 .types = BIT(NL80211_IFTYPE_AP) |
 100                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 101                         BIT(NL80211_IFTYPE_P2P_GO),
 102         },
 103         {
 104                 .max = 1,
 105                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
 106         },
 107 };
 108
 109 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 110         {
 111                 .num_different_channels = 2,
 112                 .max_interfaces = 3,
 113                 .limits = iwl_mvm_limits,
 114                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 115         },
 116 };
 117
 118 #ifdef CONFIG_PM_SLEEP
 119 static const struct nl80211_wowlan_tcp_data_token_feature
 120 iwl_mvm_wowlan_tcp_token_feature = {
 121         .min_len = 0,
 122         .max_len = 255,
 123         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 124 };
 125
 126 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 127         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 128         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 129                             sizeof(struct ethhdr) -
 130                             sizeof(struct iphdr) -
 131                             sizeof(struct tcphdr),
 132         .data_interval_max = 65535, /* __le16 in API */
 133         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 134                             sizeof(struct ethhdr) -
 135                             sizeof(struct iphdr) -
 136                             sizeof(struct tcphdr),
 137         .seq = true,
 138 };
 139 #endif
 140
 141 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 142 /*
 143  * Use the reserved field to indicate magic values.
 144  * these values will only be used internally by the driver,
 145  * and won't make it to the fw (reserved will be 0).
 146  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 147  *      be the vif's ip address. in case there is not a single
 148  *      ip address (0, or more than 1), this attribute will
 149  *      be skipped.
 150  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 151  *      the LSB bytes of the vif's mac address
 152  */
 153 enum {
 154         BC_FILTER_MAGIC_NONE = 0,
 155         BC_FILTER_MAGIC_IP,
 156         BC_FILTER_MAGIC_MAC,
 157 };
 158
 159 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 160         {
 161                 /* arp */
 162                 .discard = 0,
 163                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 164                 .attrs = {
 165                         {
 166                                 /* frame type - arp, hw type - ethernet */
 167                                 .offset_type =
 168                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 169                                 .offset = sizeof(rfc1042_header),
 170                                 .val = cpu_to_be32(0x08060001),
 171                                 .mask = cpu_to_be32(0xffffffff),
 172                         },
 173                         {
 174                                 /* arp dest ip */
 175                                 .offset_type =
 176                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 177                                 .offset = sizeof(rfc1042_header) + 2 +
 178                                           sizeof(struct arphdr) +
 179                                           ETH_ALEN + sizeof(__be32) +
 180                                           ETH_ALEN,
 181                                 .mask = cpu_to_be32(0xffffffff),
 182                                 /* mark it as special field */
 183                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 184                         },
 185                 },
 186         },
 187         {
 188                 /* dhcp offer bcast */
 189                 .discard = 0,
 190                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 191                 .attrs = {
 192                         {
 193                                 /* udp dest port - 68 (bootp client)*/
 194                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 195                                 .offset = offsetof(struct udphdr, dest),
 196                                 .val = cpu_to_be32(0x00440000),
 197                                 .mask = cpu_to_be32(0xffff0000),
 198                         },
 199                         {
 200                                 /* dhcp - lsb bytes of client hw address */
 201                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 202                                 .offset = 38,
 203                                 .mask = cpu_to_be32(0xffffffff),
 204                                 /* mark it as special field */
 205                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 206                         },
 207                 },
 208         },
 209         /* last filter must be empty */
 210         {},
 211 };
 212 #endif
 213
 214 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 215 {
 216         if (!iwl_mvm_is_d0i3_supported(mvm))
 217                 return;
 218
 219         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 220         spin_lock_bh(&mvm->refs_lock);
 221         mvm->refs[ref_type]++;
 222         spin_unlock_bh(&mvm->refs_lock);
 223         iwl_trans_ref(mvm->trans);
 224 }
 225
 226 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 227 {
 228         if (!iwl_mvm_is_d0i3_supported(mvm))
 229                 return;
 230
 231         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 232         spin_lock_bh(&mvm->refs_lock);
 233         if (WARN_ON(!mvm->refs[ref_type])) {
 234                 spin_unlock_bh(&mvm->refs_lock);
 235                 return;
 236         }
 237         mvm->refs[ref_type]--;
 238         spin_unlock_bh(&mvm->refs_lock);
 239         iwl_trans_unref(mvm->trans);
 240 }
 241
 242 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
 243                                      enum iwl_mvm_ref_type except_ref)
 244 {
 245         int i, j;
 246
 247         if (!iwl_mvm_is_d0i3_supported(mvm))
 248                 return;
 249
 250         spin_lock_bh(&mvm->refs_lock);
 251         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 252                 if (except_ref == i || !mvm->refs[i])
 253                         continue;
 254
 255                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
 256                               i, mvm->refs[i]);
 257                 for (j = 0; j < mvm->refs[i]; j++)
 258                         iwl_trans_unref(mvm->trans);
 259                 mvm->refs[i] = 0;
 260         }
 261         spin_unlock_bh(&mvm->refs_lock);
 262 }
 263
 264 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
 265 {
 266         int i;
 267         bool taken = false;
 268
 269         if (!iwl_mvm_is_d0i3_supported(mvm))
 270                 return true;
 271
 272         spin_lock_bh(&mvm->refs_lock);
 273         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 274                 if (mvm->refs[i]) {
 275                         taken = true;
 276                         break;
 277                 }
 278         }
 279         spin_unlock_bh(&mvm->refs_lock);
 280
 281         return taken;
 282 }
 283
 284 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 285 {
 286         iwl_mvm_ref(mvm, ref_type);
 287
 288         if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 289                                 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
 290                                 HZ)) {
 291                 WARN_ON_ONCE(1);
 292                 iwl_mvm_unref(mvm, ref_type);
 293                 return -EIO;
 294         }
 295
 296         return 0;
 297 }
 298
 299 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 300 {
 301         int i;
 302
 303         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 304         for (i = 0; i < NUM_PHY_CTX; i++) {
 305                 mvm->phy_ctxts[i].id = i;
 306                 mvm->phy_ctxts[i].ref = 0;
 307         }
 308 }
 309
 310 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
 311                                                   const char *alpha2,
 312                                                   enum iwl_mcc_source src_id,
 313                                                   bool *changed)
 314 {
 315         struct ieee80211_regdomain *regd = NULL;
 316         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
 317         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 318         struct iwl_mcc_update_resp *resp;
 319
 320         IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
 321
 322         lockdep_assert_held(&mvm->mutex);
 323
 324         resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
 325         if (IS_ERR_OR_NULL(resp)) {
 326                 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
 327                               PTR_ERR_OR_ZERO(resp));
 328                 goto out;
 329         }
 330
 331         if (changed)
 332                 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
 333
 334         regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
 335                                       __le32_to_cpu(resp->n_channels),
 336                                       resp->channels,
 337                                       __le16_to_cpu(resp->mcc));
 338         /* Store the return source id */
 339         src_id = resp->source_id;
 340         kfree(resp);
 341         if (IS_ERR_OR_NULL(regd)) {
 342                 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
 343                               PTR_ERR_OR_ZERO(regd));
 344                 goto out;
 345         }
 346
 347         IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
 348                       regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
 349         mvm->lar_regdom_set = true;
 350         mvm->mcc_src = src_id;
 351
 352 out:
 353         return regd;
 354 }
 355
 356 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
 357 {
 358         bool changed;
 359         struct ieee80211_regdomain *regd;
 360
 361         if (!iwl_mvm_is_lar_supported(mvm))
 362                 return;
 363
 364         regd = iwl_mvm_get_current_regdomain(mvm, &changed);
 365         if (!IS_ERR_OR_NULL(regd)) {
 366                 /* only update the regulatory core if changed */
 367                 if (changed)
 368                         regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
 369
 370                 kfree(regd);
 371         }
 372 }
 373
 374 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
 375                                                           bool *changed)
 376 {
 377         return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
 378                                      iwl_mvm_is_wifi_mcc_supported(mvm) ?
 379                                      MCC_SOURCE_GET_CURRENT :
 380                                      MCC_SOURCE_OLD_FW, changed);
 381 }
 382
 383 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
 384 {
 385         enum iwl_mcc_source used_src;
 386         struct ieee80211_regdomain *regd;
 387         int ret;
 388         bool changed;
 389         const struct ieee80211_regdomain *r =
 390                         rtnl_dereference(mvm->hw->wiphy->regd);
 391
 392         if (!r)
 393                 return -ENOENT;
 394
 395         /* save the last source in case we overwrite it below */
 396         used_src = mvm->mcc_src;
 397         if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
 398                 /* Notify the firmware we support wifi location updates */
 399                 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
 400                 if (!IS_ERR_OR_NULL(regd))
 401                         kfree(regd);
 402         }
 403
 404         /* Now set our last stored MCC and source */
 405         regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
 406                                      &changed);
 407         if (IS_ERR_OR_NULL(regd))
 408                 return -EIO;
 409
 410         /* update cfg80211 if the regdomain was changed */
 411         if (changed)
 412                 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
 413         else
 414                 ret = 0;
 415
 416         kfree(regd);
 417         return ret;
 418 }
 419
 420 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 421 {
 422         struct ieee80211_hw *hw = mvm->hw;
 423         int num_mac, ret, i;
 424         static const u32 mvm_ciphers[] = {
 425                 WLAN_CIPHER_SUITE_WEP40,
 426                 WLAN_CIPHER_SUITE_WEP104,
 427                 WLAN_CIPHER_SUITE_TKIP,
 428                 WLAN_CIPHER_SUITE_CCMP,
 429         };
 430
 431         /* Tell mac80211 our characteristics */
 432         ieee80211_hw_set(hw, SIGNAL_DBM);
 433         ieee80211_hw_set(hw, SPECTRUM_MGMT);
 434         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
 435         ieee80211_hw_set(hw, QUEUE_CONTROL);
 436         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
 437         ieee80211_hw_set(hw, SUPPORTS_PS);
 438         ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
 439         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
 440         ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
 441         ieee80211_hw_set(hw, CONNECTION_MONITOR);
 442         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
 443         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
 444         ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
 445         ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
 446         ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
 447         if (iwl_mvm_has_new_rx_api(mvm))
 448                 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
 449         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_STA_PM_NOTIF))
 450                 ieee80211_hw_set(hw, AP_LINK_PS);
 451
 452         if (mvm->trans->num_rx_queues > 1)
 453                 ieee80211_hw_set(hw, USES_RSS);
 454
 455         if (mvm->trans->max_skb_frags)
 456                 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
 457
 458         if (!iwl_mvm_is_dqa_supported(mvm))
 459                 hw->queues = mvm->first_agg_queue;
 460         else
 461                 hw->queues = IEEE80211_MAX_QUEUES;
 462         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 463         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 464                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 465         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
 466                 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
 467
 468         hw->radiotap_timestamp.units_pos =
 469                 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US |
 470                 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ;
 471         /* this is the case for CCK frames, it's better (only 8) for OFDM */
 472         hw->radiotap_timestamp.accuracy = 22;
 473
 474         hw->rate_control_algorithm = "iwl-mvm-rs";
 475         hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
 476         hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 477
 478         BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6);
 479         memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
 480         hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
 481         hw->wiphy->cipher_suites = mvm->ciphers;
 482
 483         if (iwl_mvm_has_new_rx_api(mvm)) {
 484                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 485                         WLAN_CIPHER_SUITE_GCMP;
 486                 hw->wiphy->n_cipher_suites++;
 487                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 488                         WLAN_CIPHER_SUITE_GCMP_256;
 489                 hw->wiphy->n_cipher_suites++;
 490         }
 491
 492         /* Enable 11w if software crypto is not enabled (as the
 493          * firmware will interpret some mgmt packets, so enabling it
 494          * with software crypto isn't safe).
 495          */
 496         if (!iwlwifi_mod_params.sw_crypto) {
 497                 ieee80211_hw_set(hw, MFP_CAPABLE);
 498                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 499                         WLAN_CIPHER_SUITE_AES_CMAC;
 500                 hw->wiphy->n_cipher_suites++;
 501                 if (iwl_mvm_has_new_rx_api(mvm)) {
 502                         mvm->ciphers[hw->wiphy->n_cipher_suites] =
 503                                 WLAN_CIPHER_SUITE_BIP_GMAC_128;
 504                         hw->wiphy->n_cipher_suites++;
 505                         mvm->ciphers[hw->wiphy->n_cipher_suites] =
 506                                 WLAN_CIPHER_SUITE_BIP_GMAC_256;
 507                         hw->wiphy->n_cipher_suites++;
 508                 }
 509         }
 510
 511         /* currently FW API supports only one optional cipher scheme */
 512         if (mvm->fw->cs[0].cipher) {
 513                 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0];
 514                 struct ieee80211_cipher_scheme *cs = &mvm->cs[0];
 515
 516                 mvm->hw->n_cipher_schemes = 1;
 517
 518                 cs->cipher = le32_to_cpu(fwcs->cipher);
 519                 cs->iftype = BIT(NL80211_IFTYPE_STATION);
 520                 cs->hdr_len = fwcs->hdr_len;
 521                 cs->pn_len = fwcs->pn_len;
 522                 cs->pn_off = fwcs->pn_off;
 523                 cs->key_idx_off = fwcs->key_idx_off;
 524                 cs->key_idx_mask = fwcs->key_idx_mask;
 525                 cs->key_idx_shift = fwcs->key_idx_shift;
 526                 cs->mic_len = fwcs->mic_len;
 527
 528                 mvm->hw->cipher_schemes = mvm->cs;
 529                 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher;
 530                 hw->wiphy->n_cipher_suites++;
 531         }
 532
 533         ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
 534         hw->wiphy->features |=
 535                 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
 536                 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
 537                 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
 538
 539         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 540         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 541         hw->chanctx_data_size = sizeof(u16);
 542
 543         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 544                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 545                 BIT(NL80211_IFTYPE_AP) |
 546                 BIT(NL80211_IFTYPE_P2P_GO) |
 547                 BIT(NL80211_IFTYPE_P2P_DEVICE) |
 548                 BIT(NL80211_IFTYPE_ADHOC);
 549
 550         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 551         hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
 552         if (iwl_mvm_is_lar_supported(mvm))
 553                 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
 554         else
 555                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 556                                                REGULATORY_DISABLE_BEACON_HINTS;
 557
 558         hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 559         hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 560
 561         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 562         hw->wiphy->n_iface_combinations =
 563                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 564
 565         hw->wiphy->max_remain_on_channel_duration = 10000;
 566         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 567         /* we can compensate an offset of up to 3 channels = 15 MHz */
 568         hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
 569
 570         /* Extract MAC address */
 571         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 572         hw->wiphy->addresses = mvm->addresses;
 573         hw->wiphy->n_addresses = 1;
 574
 575         /* Extract additional MAC addresses if available */
 576         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 577                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 578
 579         for (i = 1; i < num_mac; i++) {
 580                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 581                        ETH_ALEN);
 582                 mvm->addresses[i].addr[5]++;
 583                 hw->wiphy->n_addresses++;
 584         }
 585
 586         iwl_mvm_reset_phy_ctxts(mvm);
 587
 588         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
 589
 590         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 591
 592         BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
 593         BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
 594                      IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
 595
 596         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
 597                 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
 598         else
 599                 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
 600
 601         if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
 602                 hw->wiphy->bands[NL80211_BAND_2GHZ] =
 603                         &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
 604         if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
 605                 hw->wiphy->bands[NL80211_BAND_5GHZ] =
 606                         &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
 607
 608                 if (fw_has_capa(&mvm->fw->ucode_capa,
 609                                 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
 610                     fw_has_api(&mvm->fw->ucode_capa,
 611                                IWL_UCODE_TLV_API_LQ_SS_PARAMS))
 612                         hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
 613                                 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
 614         }
 615
 616         hw->wiphy->hw_version = mvm->trans->hw_id;
 617
 618         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 619                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 620         else
 621                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 622
 623         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 624         hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 625         hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 626         /* we create the 802.11 header and zero length SSID IE. */
 627         hw->wiphy->max_sched_scan_ie_len =
 628                 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 629         hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
 630         hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
 631
 632         /*
 633          * the firmware uses u8 for num of iterations, but 0xff is saved for
 634          * infinite loop, so the maximum number of iterations is actually 254.
 635          */
 636         hw->wiphy->max_sched_scan_plan_iterations = 254;
 637
 638         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 639                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
 640                                NL80211_FEATURE_P2P_GO_OPPPS |
 641                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
 642                                NL80211_FEATURE_DYNAMIC_SMPS |
 643                                NL80211_FEATURE_STATIC_SMPS |
 644                                NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
 645
 646         if (fw_has_capa(&mvm->fw->ucode_capa,
 647                         IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
 648                 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
 649         if (fw_has_capa(&mvm->fw->ucode_capa,
 650                         IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
 651                 hw->wiphy->features |= NL80211_FEATURE_QUIET;
 652
 653         if (fw_has_capa(&mvm->fw->ucode_capa,
 654                         IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
 655                 hw->wiphy->features |=
 656                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
 657
 658         if (fw_has_capa(&mvm->fw->ucode_capa,
 659                         IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
 660                 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
 661
 662         if (fw_has_api(&mvm->fw->ucode_capa,
 663                        IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
 664                 wiphy_ext_feature_set(hw->wiphy,
 665                                       NL80211_EXT_FEATURE_SCAN_START_TIME);
 666                 wiphy_ext_feature_set(hw->wiphy,
 667                                       NL80211_EXT_FEATURE_BSS_PARENT_TSF);
 668                 wiphy_ext_feature_set(hw->wiphy,
 669                                       NL80211_EXT_FEATURE_SET_SCAN_DWELL);
 670         }
 671
 672         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 673
 674 #ifdef CONFIG_PM_SLEEP
 675         if (iwl_mvm_is_d0i3_supported(mvm) &&
 676             device_can_wakeup(mvm->trans->dev)) {
 677                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 678                 hw->wiphy->wowlan = &mvm->wowlan;
 679         }
 680
 681         if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec &&
 682             mvm->trans->ops->d3_suspend &&
 683             mvm->trans->ops->d3_resume &&
 684             device_can_wakeup(mvm->trans->dev)) {
 685                 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
 686                                      WIPHY_WOWLAN_DISCONNECT |
 687                                      WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 688                                      WIPHY_WOWLAN_RFKILL_RELEASE |
 689                                      WIPHY_WOWLAN_NET_DETECT;
 690                 if (!iwlwifi_mod_params.sw_crypto)
 691                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 692                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 693                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 694
 695                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 696                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 697                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 698                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
 699                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 700                 hw->wiphy->wowlan = &mvm->wowlan;
 701         }
 702 #endif
 703
 704 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 705         /* assign default bcast filtering configuration */
 706         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 707 #endif
 708
 709         ret = iwl_mvm_leds_init(mvm);
 710         if (ret)
 711                 return ret;
 712
 713         if (fw_has_capa(&mvm->fw->ucode_capa,
 714                         IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
 715                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
 716                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 717                 ieee80211_hw_set(hw, TDLS_WIDER_BW);
 718         }
 719
 720         if (fw_has_capa(&mvm->fw->ucode_capa,
 721                         IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
 722                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
 723                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 724         }
 725
 726         hw->netdev_features |= mvm->cfg->features;
 727         if (!iwl_mvm_is_csum_supported(mvm)) {
 728                 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS |
 729                                          NETIF_F_RXCSUM);
 730                 /* We may support SW TX CSUM */
 731                 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
 732                         hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS;
 733         }
 734
 735         ret = ieee80211_register_hw(mvm->hw);
 736         if (ret)
 737                 iwl_mvm_leds_exit(mvm);
 738
 739         if (mvm->cfg->vht_mu_mimo_supported)
 740                 wiphy_ext_feature_set(hw->wiphy,
 741                                       NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
 742
 743         return ret;
 744 }
 745
 746 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 747                              struct ieee80211_sta *sta,
 748                              struct sk_buff *skb)
 749 {
 750         struct iwl_mvm_sta *mvmsta;
 751         bool defer = false;
 752
 753         /*
 754          * double check the IN_D0I3 flag both before and after
 755          * taking the spinlock, in order to prevent taking
 756          * the spinlock when not needed.
 757          */
 758         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 759                 return false;
 760
 761         spin_lock(&mvm->d0i3_tx_lock);
 762         /*
 763          * testing the flag again ensures the skb dequeue
 764          * loop (on d0i3 exit) hasn't run yet.
 765          */
 766         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 767                 goto out;
 768
 769         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 770         if (mvmsta->sta_id == IWL_MVM_INVALID_STA ||
 771             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 772                 goto out;
 773
 774         __skb_queue_tail(&mvm->d0i3_tx, skb);
 775         ieee80211_stop_queues(mvm->hw);
 776
 777         /* trigger wakeup */
 778         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 779         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 780
 781         defer = true;
 782 out:
 783         spin_unlock(&mvm->d0i3_tx_lock);
 784         return defer;
 785 }
 786
 787 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 788                            struct ieee80211_tx_control *control,
 789                            struct sk_buff *skb)
 790 {
 791         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 792         struct ieee80211_sta *sta = control->sta;
 793         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 794         struct ieee80211_hdr *hdr = (void *)skb->data;
 795
 796         if (iwl_mvm_is_radio_killed(mvm)) {
 797                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 798                 goto drop;
 799         }
 800
 801         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 802             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 803             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 804                 goto drop;
 805
 806         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 807         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 808                      ieee80211_is_mgmt(hdr->frame_control) &&
 809                      !ieee80211_is_deauth(hdr->frame_control) &&
 810                      !ieee80211_is_disassoc(hdr->frame_control) &&
 811                      !ieee80211_is_action(hdr->frame_control)))
 812                 sta = NULL;
 813
 814         if (sta) {
 815                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 816                         return;
 817                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 818                         goto drop;
 819                 return;
 820         }
 821
 822         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 823                 goto drop;
 824         return;
 825  drop:
 826         ieee80211_free_txskb(hw, skb);
 827 }
 828
 829 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 830 {
 831         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 832                 return false;
 833         return true;
 834 }
 835
 836 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 837 {
 838         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 839                 return false;
 840         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 841                 return true;
 842
 843         /* enabled by default */
 844         return true;
 845 }
 846
 847 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...)   \
 848         do {                                                    \
 849                 if (!(le16_to_cpu(_tid_bm) & BIT(_tid)))        \
 850                         break;                                  \
 851                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
 852         } while (0)
 853
 854 static void
 855 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 856                             struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
 857                             enum ieee80211_ampdu_mlme_action action)
 858 {
 859         struct iwl_fw_dbg_trigger_tlv *trig;
 860         struct iwl_fw_dbg_trigger_ba *ba_trig;
 861
 862         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
 863                 return;
 864
 865         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
 866         ba_trig = (void *)trig->data;
 867
 868         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
 869                 return;
 870
 871         switch (action) {
 872         case IEEE80211_AMPDU_TX_OPERATIONAL: {
 873                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 874                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
 875
 876                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
 877                                  "TX AGG START: MAC %pM tid %d ssn %d\n",
 878                                  sta->addr, tid, tid_data->ssn);
 879                 break;
 880                 }
 881         case IEEE80211_AMPDU_TX_STOP_CONT:
 882                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
 883                                  "TX AGG STOP: MAC %pM tid %d\n",
 884                                  sta->addr, tid);
 885                 break;
 886         case IEEE80211_AMPDU_RX_START:
 887                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
 888                                  "RX AGG START: MAC %pM tid %d ssn %d\n",
 889                                  sta->addr, tid, rx_ba_ssn);
 890                 break;
 891         case IEEE80211_AMPDU_RX_STOP:
 892                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
 893                                  "RX AGG STOP: MAC %pM tid %d\n",
 894                                  sta->addr, tid);
 895                 break;
 896         default:
 897                 break;
 898         }
 899 }
 900
 901 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 902                                     struct ieee80211_vif *vif,
 903                                     struct ieee80211_ampdu_params *params)
 904 {
 905         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 906         int ret;
 907         bool tx_agg_ref = false;
 908         struct ieee80211_sta *sta = params->sta;
 909         enum ieee80211_ampdu_mlme_action action = params->action;
 910         u16 tid = params->tid;
 911         u16 *ssn = &params->ssn;
 912         u8 buf_size = params->buf_size;
 913         bool amsdu = params->amsdu;
 914         u16 timeout = params->timeout;
 915
 916         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 917                      sta->addr, tid, action);
 918
 919         if (!(mvm->nvm_data->sku_cap_11n_enable))
 920                 return -EACCES;
 921
 922         /* return from D0i3 before starting a new Tx aggregation */
 923         switch (action) {
 924         case IEEE80211_AMPDU_TX_START:
 925         case IEEE80211_AMPDU_TX_STOP_CONT:
 926         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 927         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 928         case IEEE80211_AMPDU_TX_OPERATIONAL:
 929                 /*
 930                  * for tx start, wait synchronously until D0i3 exit to
 931                  * get the correct sequence number for the tid.
 932                  * additionally, some other ampdu actions use direct
 933                  * target access, which is not handled automatically
 934                  * by the trans layer (unlike commands), so wait for
 935                  * d0i3 exit in these cases as well.
 936                  */
 937                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 938                 if (ret)
 939                         return ret;
 940
 941                 tx_agg_ref = true;
 942                 break;
 943         default:
 944                 break;
 945         }
 946
 947         mutex_lock(&mvm->mutex);
 948
 949         switch (action) {
 950         case IEEE80211_AMPDU_RX_START:
 951                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 952                         ret = -EINVAL;
 953                         break;
 954                 }
 955                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
 956                                          timeout);
 957                 break;
 958         case IEEE80211_AMPDU_RX_STOP:
 959                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
 960                                          timeout);
 961                 break;
 962         case IEEE80211_AMPDU_TX_START:
 963                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 964                         ret = -EINVAL;
 965                         break;
 966                 }
 967                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 968                 break;
 969         case IEEE80211_AMPDU_TX_STOP_CONT:
 970                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 971                 break;
 972         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 973         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 974                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 975                 break;
 976         case IEEE80211_AMPDU_TX_OPERATIONAL:
 977                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
 978                                               buf_size, amsdu);
 979                 break;
 980         default:
 981                 WARN_ON_ONCE(1);
 982                 ret = -EINVAL;
 983                 break;
 984         }
 985
 986         if (!ret) {
 987                 u16 rx_ba_ssn = 0;
 988
 989                 if (action == IEEE80211_AMPDU_RX_START)
 990                         rx_ba_ssn = *ssn;
 991
 992                 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
 993                                             rx_ba_ssn, action);
 994         }
 995         mutex_unlock(&mvm->mutex);
 996
 997         /*
 998          * If the tid is marked as started, we won't use it for offloaded
 999          * traffic on the next D0i3 entry. It's safe to unref.
1000          */
1001         if (tx_agg_ref)
1002                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
1003
1004         return ret;
1005 }
1006
1007 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
1008                                      struct ieee80211_vif *vif)
1009 {
1010         struct iwl_mvm *mvm = data;
1011         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1012
1013         mvmvif->uploaded = false;
1014         mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1015
1016         spin_lock_bh(&mvm->time_event_lock);
1017         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
1018         spin_unlock_bh(&mvm->time_event_lock);
1019
1020         mvmvif->phy_ctxt = NULL;
1021         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
1022 }
1023
1024 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1025 {
1026         /* clear the D3 reconfig, we only need it to avoid dumping a
1027          * firmware coredump on reconfiguration, we shouldn't do that
1028          * on D3->D0 transition
1029          */
1030         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1031                 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1032                 iwl_mvm_fw_error_dump(mvm);
1033         }
1034
1035         /* cleanup all stale references (scan, roc), but keep the
1036          * ucode_down ref until reconfig is complete
1037          */
1038         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1039
1040         iwl_mvm_stop_device(mvm);
1041
1042         mvm->scan_status = 0;
1043         mvm->ps_disabled = false;
1044         mvm->calibrating = false;
1045
1046         /* just in case one was running */
1047         iwl_mvm_cleanup_roc_te(mvm);
1048         ieee80211_remain_on_channel_expired(mvm->hw);
1049
1050         /*
1051          * cleanup all interfaces, even inactive ones, as some might have
1052          * gone down during the HW restart
1053          */
1054         ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1055
1056         mvm->p2p_device_vif = NULL;
1057         mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1058
1059         iwl_mvm_reset_phy_ctxts(mvm);
1060         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1061         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1062         memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
1063         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1064         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1065         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1066
1067         ieee80211_wake_queues(mvm->hw);
1068
1069         /* clear any stale d0i3 state */
1070         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1071
1072         mvm->vif_count = 0;
1073         mvm->rx_ba_sessions = 0;
1074         mvm->fw_dbg_conf = FW_DBG_INVALID;
1075
1076         /* keep statistics ticking */
1077         iwl_mvm_accu_radio_stats(mvm);
1078 }
1079
1080 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1081 {
1082         int ret;
1083
1084         lockdep_assert_held(&mvm->mutex);
1085
1086         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1087                 /* Clean up some internal and mac80211 state on restart */
1088                 iwl_mvm_restart_cleanup(mvm);
1089         } else {
1090                 /* Hold the reference to prevent runtime suspend while
1091                  * the start procedure runs.  It's a bit confusing
1092                  * that the UCODE_DOWN reference is taken, but it just
1093                  * means "UCODE is not UP yet". ( TODO: rename this
1094                  * reference).
1095                  */
1096                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1097         }
1098         ret = iwl_mvm_up(mvm);
1099
1100         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1101                 /* Something went wrong - we need to finish some cleanup
1102                  * that normally iwl_mvm_mac_restart_complete() below
1103                  * would do.
1104                  */
1105                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1106                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1107         }
1108
1109         return ret;
1110 }
1111
1112 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1113 {
1114         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1115         int ret;
1116
1117         /* Some hw restart cleanups must not hold the mutex */
1118         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1119                 /*
1120                  * Make sure we are out of d0i3. This is needed
1121                  * to make sure the reference accounting is correct
1122                  * (and there is no stale d0i3_exit_work).
1123                  */
1124                 wait_event_timeout(mvm->d0i3_exit_waitq,
1125                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1126                                              &mvm->status),
1127                                    HZ);
1128         }
1129
1130         mutex_lock(&mvm->mutex);
1131         ret = __iwl_mvm_mac_start(mvm);
1132         mutex_unlock(&mvm->mutex);
1133
1134         return ret;
1135 }
1136
1137 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1138 {
1139         int ret;
1140
1141         mutex_lock(&mvm->mutex);
1142
1143         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1144         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1145         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1146         if (ret)
1147                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1148                         ret);
1149
1150         /* allow transport/FW low power modes */
1151         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1152
1153         /*
1154          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1155          * of packets the FW sent out, so we must reconnect.
1156          */
1157         iwl_mvm_teardown_tdls_peers(mvm);
1158
1159         mutex_unlock(&mvm->mutex);
1160 }
1161
1162 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1163 {
1164         if (iwl_mvm_is_d0i3_supported(mvm) &&
1165             iwl_mvm_enter_d0i3_on_suspend(mvm))
1166                 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1167                                               !test_bit(IWL_MVM_STATUS_IN_D0I3,
1168                                                         &mvm->status),
1169                                               HZ),
1170                           "D0i3 exit on resume timed out\n");
1171 }
1172
1173 static void
1174 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1175                               enum ieee80211_reconfig_type reconfig_type)
1176 {
1177         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1178
1179         switch (reconfig_type) {
1180         case IEEE80211_RECONFIG_TYPE_RESTART:
1181                 iwl_mvm_restart_complete(mvm);
1182                 break;
1183         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1184                 iwl_mvm_resume_complete(mvm);
1185                 break;
1186         }
1187 }
1188
1189 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1190 {
1191         lockdep_assert_held(&mvm->mutex);
1192
1193         /* firmware counters are obviously reset now, but we shouldn't
1194          * partially track so also clear the fw_reset_accu counters.
1195          */
1196         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1197
1198         /* async_handlers_wk is now blocked */
1199
1200         /*
1201          * The work item could be running or queued if the
1202          * ROC time event stops just as we get here.
1203          */
1204         flush_work(&mvm->roc_done_wk);
1205
1206         iwl_mvm_stop_device(mvm);
1207
1208         iwl_mvm_async_handlers_purge(mvm);
1209         /* async_handlers_list is empty and will stay empty: HW is stopped */
1210
1211         /* the fw is stopped, the aux sta is dead: clean up driver state */
1212         iwl_mvm_del_aux_sta(mvm);
1213
1214         /*
1215          * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1216          * won't be called in this case).
1217          * But make sure to cleanup interfaces that have gone down before/during
1218          * HW restart was requested.
1219          */
1220         if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1221                 ieee80211_iterate_interfaces(mvm->hw, 0,
1222                                              iwl_mvm_cleanup_iterator, mvm);
1223
1224         /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1225          * make sure there's nothing left there and warn if any is found.
1226          */
1227         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1228                 int i;
1229
1230                 for (i = 0; i < mvm->max_scans; i++) {
1231                         if (WARN_ONCE(mvm->scan_uid_status[i],
1232                                       "UMAC scan UID %d status was not cleaned\n",
1233                                       i))
1234                                 mvm->scan_uid_status[i] = 0;
1235                 }
1236         }
1237 }
1238
1239 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1240 {
1241         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1242
1243         flush_work(&mvm->d0i3_exit_work);
1244         flush_work(&mvm->async_handlers_wk);
1245         flush_work(&mvm->add_stream_wk);
1246         cancel_delayed_work_sync(&mvm->fw_dump_wk);
1247         cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1248         cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1249         iwl_mvm_free_fw_dump_desc(mvm);
1250
1251         mutex_lock(&mvm->mutex);
1252         __iwl_mvm_mac_stop(mvm);
1253         mutex_unlock(&mvm->mutex);
1254
1255         /*
1256          * The worker might have been waiting for the mutex, let it run and
1257          * discover that its list is now empty.
1258          */
1259         cancel_work_sync(&mvm->async_handlers_wk);
1260 }
1261
1262 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1263 {
1264         u16 i;
1265
1266         lockdep_assert_held(&mvm->mutex);
1267
1268         for (i = 0; i < NUM_PHY_CTX; i++)
1269                 if (!mvm->phy_ctxts[i].ref)
1270                         return &mvm->phy_ctxts[i];
1271
1272         IWL_ERR(mvm, "No available PHY context\n");
1273         return NULL;
1274 }
1275
1276 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1277                                 s16 tx_power)
1278 {
1279         struct iwl_dev_tx_power_cmd cmd = {
1280                 .v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1281                 .v3.mac_context_id =
1282                         cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1283                 .v3.pwr_restriction = cpu_to_le16(8 * tx_power),
1284         };
1285         int len = sizeof(cmd);
1286
1287         if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1288                 cmd.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1289
1290         if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1291                 len = sizeof(cmd.v3);
1292
1293         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1294 }
1295
1296 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1297                                      struct ieee80211_vif *vif)
1298 {
1299         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1300         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1301         int ret;
1302
1303         mvmvif->mvm = mvm;
1304
1305         /*
1306          * make sure D0i3 exit is completed, otherwise a target access
1307          * during tx queue configuration could be done when still in
1308          * D0i3 state.
1309          */
1310         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1311         if (ret)
1312                 return ret;
1313
1314         /*
1315          * Not much to do here. The stack will not allow interface
1316          * types or combinations that we didn't advertise, so we
1317          * don't really have to check the types.
1318          */
1319
1320         mutex_lock(&mvm->mutex);
1321
1322         /* make sure that beacon statistics don't go backwards with FW reset */
1323         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1324                 mvmvif->beacon_stats.accu_num_beacons +=
1325                         mvmvif->beacon_stats.num_beacons;
1326
1327         /* Allocate resources for the MAC context, and add it to the fw  */
1328         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1329         if (ret)
1330                 goto out_unlock;
1331
1332         /* Counting number of interfaces is needed for legacy PM */
1333         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1334                 mvm->vif_count++;
1335
1336         /*
1337          * The AP binding flow can be done only after the beacon
1338          * template is configured (which happens only in the mac80211
1339          * start_ap() flow), and adding the broadcast station can happen
1340          * only after the binding.
1341          * In addition, since modifying the MAC before adding a bcast
1342          * station is not allowed by the FW, delay the adding of MAC context to
1343          * the point where we can also add the bcast station.
1344          * In short: there's not much we can do at this point, other than
1345          * allocating resources :)
1346          */
1347         if (vif->type == NL80211_IFTYPE_AP ||
1348             vif->type == NL80211_IFTYPE_ADHOC) {
1349                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1350                 if (ret) {
1351                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1352                         goto out_release;
1353                 }
1354
1355                 if (iwl_mvm_is_dqa_supported(mvm)) {
1356                         /*
1357                          * Only queue for this station is the mcast queue,
1358                          * which shouldn't be in TFD mask anyway
1359                          */
1360                         ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
1361                                                        0, vif->type,
1362                                                        IWL_STA_MULTICAST);
1363                         if (ret)
1364                                 goto out_release;
1365                 }
1366
1367                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1368                 goto out_unlock;
1369         }
1370
1371         mvmvif->features |= hw->netdev_features;
1372
1373         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1374         if (ret)
1375                 goto out_release;
1376
1377         ret = iwl_mvm_power_update_mac(mvm);
1378         if (ret)
1379                 goto out_remove_mac;
1380
1381         /* beacon filtering */
1382         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1383         if (ret)
1384                 goto out_remove_mac;
1385
1386         if (!mvm->bf_allowed_vif &&
1387             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1388                 mvm->bf_allowed_vif = mvmvif;
1389                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1390                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1391         }
1392
1393         /*
1394          * P2P_DEVICE interface does not have a channel context assigned to it,
1395          * so a dedicated PHY context is allocated to it and the corresponding
1396          * MAC context is bound to it at this stage.
1397          */
1398         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1399
1400                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1401                 if (!mvmvif->phy_ctxt) {
1402                         ret = -ENOSPC;
1403                         goto out_free_bf;
1404                 }
1405
1406                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1407                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1408                 if (ret)
1409                         goto out_unref_phy;
1410
1411                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1412                 if (ret)
1413                         goto out_unbind;
1414
1415                 /* Save a pointer to p2p device vif, so it can later be used to
1416                  * update the p2p device MAC when a GO is started/stopped */
1417                 mvm->p2p_device_vif = vif;
1418         }
1419
1420         iwl_mvm_vif_dbgfs_register(mvm, vif);
1421         goto out_unlock;
1422
1423  out_unbind:
1424         iwl_mvm_binding_remove_vif(mvm, vif);
1425  out_unref_phy:
1426         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1427  out_free_bf:
1428         if (mvm->bf_allowed_vif == mvmvif) {
1429                 mvm->bf_allowed_vif = NULL;
1430                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1431                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1432         }
1433  out_remove_mac:
1434         mvmvif->phy_ctxt = NULL;
1435         iwl_mvm_mac_ctxt_remove(mvm, vif);
1436  out_release:
1437         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1438                 mvm->vif_count--;
1439
1440         iwl_mvm_mac_ctxt_release(mvm, vif);
1441  out_unlock:
1442         mutex_unlock(&mvm->mutex);
1443
1444         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1445
1446         return ret;
1447 }
1448
1449 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1450                                         struct ieee80211_vif *vif)
1451 {
1452         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1453
1454         if (tfd_msk) {
1455                 /*
1456                  * mac80211 first removes all the stations of the vif and
1457                  * then removes the vif. When it removes a station it also
1458                  * flushes the AMPDU session. So by now, all the AMPDU sessions
1459                  * of all the stations of this vif are closed, and the queues
1460                  * of these AMPDU sessions are properly closed.
1461                  * We still need to take care of the shared queues of the vif.
1462                  * Flush them here.
1463                  */
1464                 mutex_lock(&mvm->mutex);
1465                 iwl_mvm_flush_tx_path(mvm, tfd_msk, 0);
1466                 mutex_unlock(&mvm->mutex);
1467
1468                 /*
1469                  * There are transports that buffer a few frames in the host.
1470                  * For these, the flush above isn't enough since while we were
1471                  * flushing, the transport might have sent more frames to the
1472                  * device. To solve this, wait here until the transport is
1473                  * empty. Technically, this could have replaced the flush
1474                  * above, but flush is much faster than draining. So flush
1475                  * first, and drain to make sure we have no frames in the
1476                  * transport anymore.
1477                  * If a station still had frames on the shared queues, it is
1478                  * already marked as draining, so to complete the draining, we
1479                  * just need to wait until the transport is empty.
1480                  */
1481                 iwl_trans_wait_tx_queues_empty(mvm->trans, tfd_msk);
1482         }
1483
1484         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1485                 /*
1486                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1487                  * We assume here that all the packets sent to the OFFCHANNEL
1488                  * queue are sent in ROC session.
1489                  */
1490                 flush_work(&mvm->roc_done_wk);
1491         } else {
1492                 /*
1493                  * By now, all the AC queues are empty. The AGG queues are
1494                  * empty too. We already got all the Tx responses for all the
1495                  * packets in the queues. The drain work can have been
1496                  * triggered. Flush it.
1497                  */
1498                 flush_work(&mvm->sta_drained_wk);
1499         }
1500 }
1501
1502 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1503                                          struct ieee80211_vif *vif)
1504 {
1505         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1506         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1507
1508         iwl_mvm_prepare_mac_removal(mvm, vif);
1509
1510         mutex_lock(&mvm->mutex);
1511
1512         if (mvm->bf_allowed_vif == mvmvif) {
1513                 mvm->bf_allowed_vif = NULL;
1514                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1515                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1516         }
1517
1518         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1519
1520         /*
1521          * For AP/GO interface, the tear down of the resources allocated to the
1522          * interface is be handled as part of the stop_ap flow.
1523          */
1524         if (vif->type == NL80211_IFTYPE_AP ||
1525             vif->type == NL80211_IFTYPE_ADHOC) {
1526 #ifdef CONFIG_NL80211_TESTMODE
1527                 if (vif == mvm->noa_vif) {
1528                         mvm->noa_vif = NULL;
1529                         mvm->noa_duration = 0;
1530                 }
1531 #endif
1532                 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1533                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1534                 goto out_release;
1535         }
1536
1537         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1538                 mvm->p2p_device_vif = NULL;
1539                 iwl_mvm_rm_bcast_sta(mvm, vif);
1540                 iwl_mvm_binding_remove_vif(mvm, vif);
1541                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1542                 mvmvif->phy_ctxt = NULL;
1543         }
1544
1545         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1546                 mvm->vif_count--;
1547
1548         iwl_mvm_power_update_mac(mvm);
1549         iwl_mvm_mac_ctxt_remove(mvm, vif);
1550
1551 out_release:
1552         iwl_mvm_mac_ctxt_release(mvm, vif);
1553         mutex_unlock(&mvm->mutex);
1554 }
1555
1556 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1557 {
1558         return 0;
1559 }
1560
1561 struct iwl_mvm_mc_iter_data {
1562         struct iwl_mvm *mvm;
1563         int port_id;
1564 };
1565
1566 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1567                                       struct ieee80211_vif *vif)
1568 {
1569         struct iwl_mvm_mc_iter_data *data = _data;
1570         struct iwl_mvm *mvm = data->mvm;
1571         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1572         int ret, len;
1573
1574         /* if we don't have free ports, mcast frames will be dropped */
1575         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1576                 return;
1577
1578         if (vif->type != NL80211_IFTYPE_STATION ||
1579             !vif->bss_conf.assoc)
1580                 return;
1581
1582         cmd->port_id = data->port_id++;
1583         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1584         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1585
1586         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1587         if (ret)
1588                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1589 }
1590
1591 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1592 {
1593         struct iwl_mvm_mc_iter_data iter_data = {
1594                 .mvm = mvm,
1595         };
1596
1597         lockdep_assert_held(&mvm->mutex);
1598
1599         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1600                 return;
1601
1602         ieee80211_iterate_active_interfaces_atomic(
1603                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1604                 iwl_mvm_mc_iface_iterator, &iter_data);
1605 }
1606
1607 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1608                                      struct netdev_hw_addr_list *mc_list)
1609 {
1610         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1611         struct iwl_mcast_filter_cmd *cmd;
1612         struct netdev_hw_addr *addr;
1613         int addr_count;
1614         bool pass_all;
1615         int len;
1616
1617         addr_count = netdev_hw_addr_list_count(mc_list);
1618         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1619                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1620         if (pass_all)
1621                 addr_count = 0;
1622
1623         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1624         cmd = kzalloc(len, GFP_ATOMIC);
1625         if (!cmd)
1626                 return 0;
1627
1628         if (pass_all) {
1629                 cmd->pass_all = 1;
1630                 return (u64)(unsigned long)cmd;
1631         }
1632
1633         netdev_hw_addr_list_for_each(addr, mc_list) {
1634                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1635                                    cmd->count, addr->addr);
1636                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1637                        addr->addr, ETH_ALEN);
1638                 cmd->count++;
1639         }
1640
1641         return (u64)(unsigned long)cmd;
1642 }
1643
1644 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1645                                      unsigned int changed_flags,
1646                                      unsigned int *total_flags,
1647                                      u64 multicast)
1648 {
1649         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1650         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1651
1652         mutex_lock(&mvm->mutex);
1653
1654         /* replace previous configuration */
1655         kfree(mvm->mcast_filter_cmd);
1656         mvm->mcast_filter_cmd = cmd;
1657
1658         if (!cmd)
1659                 goto out;
1660
1661         iwl_mvm_recalc_multicast(mvm);
1662 out:
1663         mutex_unlock(&mvm->mutex);
1664         *total_flags = 0;
1665 }
1666
1667 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1668                                         struct ieee80211_vif *vif,
1669                                         unsigned int filter_flags,
1670                                         unsigned int changed_flags)
1671 {
1672         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1673
1674         /* We support only filter for probe requests */
1675         if (!(changed_flags & FIF_PROBE_REQ))
1676                 return;
1677
1678         /* Supported only for p2p client interfaces */
1679         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1680             !vif->p2p)
1681                 return;
1682
1683         mutex_lock(&mvm->mutex);
1684         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1685         mutex_unlock(&mvm->mutex);
1686 }
1687
1688 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1689 struct iwl_bcast_iter_data {
1690         struct iwl_mvm *mvm;
1691         struct iwl_bcast_filter_cmd *cmd;
1692         u8 current_filter;
1693 };
1694
1695 static void
1696 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1697                          const struct iwl_fw_bcast_filter *in_filter,
1698                          struct iwl_fw_bcast_filter *out_filter)
1699 {
1700         struct iwl_fw_bcast_filter_attr *attr;
1701         int i;
1702
1703         memcpy(out_filter, in_filter, sizeof(*out_filter));
1704
1705         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1706                 attr = &out_filter->attrs[i];
1707
1708                 if (!attr->mask)
1709                         break;
1710
1711                 switch (attr->reserved1) {
1712                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1713                         if (vif->bss_conf.arp_addr_cnt != 1) {
1714                                 attr->mask = 0;
1715                                 continue;
1716                         }
1717
1718                         attr->val = vif->bss_conf.arp_addr_list[0];
1719                         break;
1720                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1721                         attr->val = *(__be32 *)&vif->addr[2];
1722                         break;
1723                 default:
1724                         break;
1725                 }
1726                 attr->reserved1 = 0;
1727                 out_filter->num_attrs++;
1728         }
1729 }
1730
1731 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1732                                           struct ieee80211_vif *vif)
1733 {
1734         struct iwl_bcast_iter_data *data = _data;
1735         struct iwl_mvm *mvm = data->mvm;
1736         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1737         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1738         struct iwl_fw_bcast_mac *bcast_mac;
1739         int i;
1740
1741         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1742                 return;
1743
1744         bcast_mac = &cmd->macs[mvmvif->id];
1745
1746         /*
1747          * enable filtering only for associated stations, but not for P2P
1748          * Clients
1749          */
1750         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1751             !vif->bss_conf.assoc)
1752                 return;
1753
1754         bcast_mac->default_discard = 1;
1755
1756         /* copy all configured filters */
1757         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1758                 /*
1759                  * Make sure we don't exceed our filters limit.
1760                  * if there is still a valid filter to be configured,
1761                  * be on the safe side and just allow bcast for this mac.
1762                  */
1763                 if (WARN_ON_ONCE(data->current_filter >=
1764                                  ARRAY_SIZE(cmd->filters))) {
1765                         bcast_mac->default_discard = 0;
1766                         bcast_mac->attached_filters = 0;
1767                         break;
1768                 }
1769
1770                 iwl_mvm_set_bcast_filter(vif,
1771                                          &mvm->bcast_filters[i],
1772                                          &cmd->filters[data->current_filter]);
1773
1774                 /* skip current filter if it contains no attributes */
1775                 if (!cmd->filters[data->current_filter].num_attrs)
1776                         continue;
1777
1778                 /* attach the filter to current mac */
1779                 bcast_mac->attached_filters |=
1780                                 cpu_to_le16(BIT(data->current_filter));
1781
1782                 data->current_filter++;
1783         }
1784 }
1785
1786 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1787                                     struct iwl_bcast_filter_cmd *cmd)
1788 {
1789         struct iwl_bcast_iter_data iter_data = {
1790                 .mvm = mvm,
1791                 .cmd = cmd,
1792         };
1793
1794         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1795                 return false;
1796
1797         memset(cmd, 0, sizeof(*cmd));
1798         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1799         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1800
1801 #ifdef CONFIG_IWLWIFI_DEBUGFS
1802         /* use debugfs filters/macs if override is configured */
1803         if (mvm->dbgfs_bcast_filtering.override) {
1804                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1805                        sizeof(cmd->filters));
1806                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1807                        sizeof(cmd->macs));
1808                 return true;
1809         }
1810 #endif
1811
1812         /* if no filters are configured, do nothing */
1813         if (!mvm->bcast_filters)
1814                 return false;
1815
1816         /* configure and attach these filters for each associated sta vif */
1817         ieee80211_iterate_active_interfaces(
1818                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1819                 iwl_mvm_bcast_filter_iterator, &iter_data);
1820
1821         return true;
1822 }
1823
1824 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1825 {
1826         struct iwl_bcast_filter_cmd cmd;
1827
1828         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1829                 return 0;
1830
1831         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1832                 return 0;
1833
1834         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1835                                     sizeof(cmd), &cmd);
1836 }
1837 #else
1838 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1839 {
1840         return 0;
1841 }
1842 #endif
1843
1844 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1845                                     struct ieee80211_vif *vif)
1846 {
1847         struct iwl_mu_group_mgmt_cmd cmd = {};
1848
1849         memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1850                WLAN_MEMBERSHIP_LEN);
1851         memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1852                WLAN_USER_POSITION_LEN);
1853
1854         return iwl_mvm_send_cmd_pdu(mvm,
1855                                     WIDE_ID(DATA_PATH_GROUP,
1856                                             UPDATE_MU_GROUPS_CMD),
1857                                     0, sizeof(cmd), &cmd);
1858 }
1859
1860 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1861                                            struct ieee80211_vif *vif)
1862 {
1863         if (vif->mu_mimo_owner) {
1864                 struct iwl_mu_group_mgmt_notif *notif = _data;
1865
1866                 /*
1867                  * MU-MIMO Group Id action frame is little endian. We treat
1868                  * the data received from firmware as if it came from the
1869                  * action frame, so no conversion is needed.
1870                  */
1871                 ieee80211_update_mu_groups(vif,
1872                                            (u8 *)&notif->membership_status,
1873                                            (u8 *)&notif->user_position);
1874         }
1875 }
1876
1877 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1878                                struct iwl_rx_cmd_buffer *rxb)
1879 {
1880         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1881         struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1882
1883         ieee80211_iterate_active_interfaces_atomic(
1884                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1885                         iwl_mvm_mu_mimo_iface_iterator, notif);
1886 }
1887
1888 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1889                                              struct ieee80211_vif *vif,
1890                                              struct ieee80211_bss_conf *bss_conf,
1891                                              u32 changes)
1892 {
1893         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1894         int ret;
1895
1896         /*
1897          * Re-calculate the tsf id, as the master-slave relations depend on the
1898          * beacon interval, which was not known when the station interface was
1899          * added.
1900          */
1901         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1902                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1903
1904         if (changes & BSS_CHANGED_ASSOC && !bss_conf->assoc &&
1905             mvmvif->lqm_active)
1906                 iwl_mvm_send_lqm_cmd(vif, LQM_CMD_OPERATION_STOP_MEASUREMENT,
1907                                      0, 0);
1908
1909         /*
1910          * If we're not associated yet, take the (new) BSSID before associating
1911          * so the firmware knows. If we're already associated, then use the old
1912          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
1913          * branch for disassociation below.
1914          */
1915         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
1916                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1917
1918         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
1919         if (ret)
1920                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1921
1922         /* after sending it once, adopt mac80211 data */
1923         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
1924         mvmvif->associated = bss_conf->assoc;
1925
1926         if (changes & BSS_CHANGED_ASSOC) {
1927                 if (bss_conf->assoc) {
1928                         /* clear statistics to get clean beacon counter */
1929                         iwl_mvm_request_statistics(mvm, true);
1930                         memset(&mvmvif->beacon_stats, 0,
1931                                sizeof(mvmvif->beacon_stats));
1932
1933                         /* add quota for this interface */
1934                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1935                         if (ret) {
1936                                 IWL_ERR(mvm, "failed to update quotas\n");
1937                                 return;
1938                         }
1939
1940                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1941                                      &mvm->status)) {
1942                                 /*
1943                                  * If we're restarting then the firmware will
1944                                  * obviously have lost synchronisation with
1945                                  * the AP. It will attempt to synchronise by
1946                                  * itself, but we can make it more reliable by
1947                                  * scheduling a session protection time event.
1948                                  *
1949                                  * The firmware needs to receive a beacon to
1950                                  * catch up with synchronisation, use 110% of
1951                                  * the beacon interval.
1952                                  *
1953                                  * Set a large maximum delay to allow for more
1954                                  * than a single interface.
1955                                  */
1956                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1957                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
1958                                                         5 * dur, false);
1959                         }
1960
1961                         iwl_mvm_sf_update(mvm, vif, false);
1962                         iwl_mvm_power_vif_assoc(mvm, vif);
1963                         if (vif->p2p) {
1964                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
1965                                 iwl_mvm_update_smps(mvm, vif,
1966                                                     IWL_MVM_SMPS_REQ_PROT,
1967                                                     IEEE80211_SMPS_DYNAMIC);
1968                         }
1969                 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
1970                         /*
1971                          * If update fails - SF might be running in associated
1972                          * mode while disassociated - which is forbidden.
1973                          */
1974                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1975                                   "Failed to update SF upon disassociation\n");
1976
1977                         /* remove AP station now that the MAC is unassoc */
1978                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1979                         if (ret)
1980                                 IWL_ERR(mvm, "failed to remove AP station\n");
1981
1982                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1983                                 mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1984                         mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1985                         /* remove quota for this interface */
1986                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
1987                         if (ret)
1988                                 IWL_ERR(mvm, "failed to update quotas\n");
1989
1990                         if (vif->p2p)
1991                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
1992
1993                         /* this will take the cleared BSSID from bss_conf */
1994                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1995                         if (ret)
1996                                 IWL_ERR(mvm,
1997                                         "failed to update MAC %pM (clear after unassoc)\n",
1998                                         vif->addr);
1999                 }
2000
2001                 /*
2002                  * The firmware tracks the MU-MIMO group on its own.
2003                  * However, on HW restart we should restore this data.
2004                  */
2005                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2006                     (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
2007                         ret = iwl_mvm_update_mu_groups(mvm, vif);
2008                         if (ret)
2009                                 IWL_ERR(mvm,
2010                                         "failed to update VHT MU_MIMO groups\n");
2011                 }
2012
2013                 iwl_mvm_recalc_multicast(mvm);
2014                 iwl_mvm_configure_bcast_filter(mvm);
2015
2016                 /* reset rssi values */
2017                 mvmvif->bf_data.ave_beacon_signal = 0;
2018
2019                 iwl_mvm_bt_coex_vif_change(mvm);
2020                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2021                                     IEEE80211_SMPS_AUTOMATIC);
2022                 if (fw_has_capa(&mvm->fw->ucode_capa,
2023                                 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2024                         iwl_mvm_config_scan(mvm);
2025         }
2026
2027         if (changes & BSS_CHANGED_BEACON_INFO) {
2028                 /*
2029                  * We received a beacon from the associated AP so
2030                  * remove the session protection.
2031                  */
2032                 iwl_mvm_remove_time_event(mvm, mvmvif,
2033                                           &mvmvif->time_event_data);
2034
2035                 iwl_mvm_sf_update(mvm, vif, false);
2036                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2037         }
2038
2039         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2040                        /*
2041                         * Send power command on every beacon change,
2042                         * because we may have not enabled beacon abort yet.
2043                         */
2044                        BSS_CHANGED_BEACON_INFO)) {
2045                 ret = iwl_mvm_power_update_mac(mvm);
2046                 if (ret)
2047                         IWL_ERR(mvm, "failed to update power mode\n");
2048         }
2049
2050         if (changes & BSS_CHANGED_TXPOWER) {
2051                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2052                                 bss_conf->txpower);
2053                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2054         }
2055
2056         if (changes & BSS_CHANGED_CQM) {
2057                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2058                 /* reset cqm events tracking */
2059                 mvmvif->bf_data.last_cqm_event = 0;
2060                 if (mvmvif->bf_data.bf_enabled) {
2061                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2062                         if (ret)
2063                                 IWL_ERR(mvm,
2064                                         "failed to update CQM thresholds\n");
2065                 }
2066         }
2067
2068         if (changes & BSS_CHANGED_ARP_FILTER) {
2069                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2070                 iwl_mvm_configure_bcast_filter(mvm);
2071         }
2072 }
2073
2074 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2075                                  struct ieee80211_vif *vif)
2076 {
2077         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2078         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2079         int ret;
2080
2081         /*
2082          * iwl_mvm_mac_ctxt_add() might read directly from the device
2083          * (the system time), so make sure it is available.
2084          */
2085         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2086         if (ret)
2087                 return ret;
2088
2089         mutex_lock(&mvm->mutex);
2090
2091         /* Send the beacon template */
2092         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2093         if (ret)
2094                 goto out_unlock;
2095
2096         /*
2097          * Re-calculate the tsf id, as the master-slave relations depend on the
2098          * beacon interval, which was not known when the AP interface was added.
2099          */
2100         if (vif->type == NL80211_IFTYPE_AP)
2101                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2102
2103         mvmvif->ap_assoc_sta_count = 0;
2104
2105         /* Add the mac context */
2106         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2107         if (ret)
2108                 goto out_unlock;
2109
2110         /* Perform the binding */
2111         ret = iwl_mvm_binding_add_vif(mvm, vif);
2112         if (ret)
2113                 goto out_remove;
2114
2115         ret = iwl_mvm_add_mcast_sta(mvm, vif);
2116         if (ret)
2117                 goto out_unbind;
2118
2119         /* Send the bcast station. At this stage the TBTT and DTIM time events
2120          * are added and applied to the scheduler */
2121         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2122         if (ret)
2123                 goto out_rm_mcast;
2124
2125         /* must be set before quota calculations */
2126         mvmvif->ap_ibss_active = true;
2127
2128         /* power updated needs to be done before quotas */
2129         iwl_mvm_power_update_mac(mvm);
2130
2131         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2132         if (ret)
2133                 goto out_quota_failed;
2134
2135         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2136         if (vif->p2p && mvm->p2p_device_vif)
2137                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2138
2139         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2140
2141         iwl_mvm_bt_coex_vif_change(mvm);
2142
2143         /* we don't support TDLS during DCM */
2144         if (iwl_mvm_phy_ctx_count(mvm) > 1)
2145                 iwl_mvm_teardown_tdls_peers(mvm);
2146
2147         goto out_unlock;
2148
2149 out_quota_failed:
2150         iwl_mvm_power_update_mac(mvm);
2151         mvmvif->ap_ibss_active = false;
2152         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2153 out_rm_mcast:
2154         iwl_mvm_rm_mcast_sta(mvm, vif);
2155 out_unbind:
2156         iwl_mvm_binding_remove_vif(mvm, vif);
2157 out_remove:
2158         iwl_mvm_mac_ctxt_remove(mvm, vif);
2159 out_unlock:
2160         mutex_unlock(&mvm->mutex);
2161         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2162         return ret;
2163 }
2164
2165 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2166                                  struct ieee80211_vif *vif)
2167 {
2168         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2169         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2170
2171         iwl_mvm_prepare_mac_removal(mvm, vif);
2172
2173         mutex_lock(&mvm->mutex);
2174
2175         /* Handle AP stop while in CSA */
2176         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2177                 iwl_mvm_remove_time_event(mvm, mvmvif,
2178                                           &mvmvif->time_event_data);
2179                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2180                 mvmvif->csa_countdown = false;
2181         }
2182
2183         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2184                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2185                 mvm->csa_tx_block_bcn_timeout = 0;
2186         }
2187
2188         mvmvif->ap_ibss_active = false;
2189         mvm->ap_last_beacon_gp2 = 0;
2190
2191         iwl_mvm_bt_coex_vif_change(mvm);
2192
2193         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2194
2195         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2196         if (vif->p2p && mvm->p2p_device_vif)
2197                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2198
2199         iwl_mvm_update_quotas(mvm, false, NULL);
2200
2201         /*
2202          * This is not very nice, but the simplest:
2203          * For older FWs removing the mcast sta before the bcast station may
2204          * cause assert 0x2b00.
2205          * This is fixed in later FW (which will stop beaconing when removing
2206          * bcast station).
2207          * So make the order of removal depend on the TLV
2208          */
2209         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2210                 iwl_mvm_rm_mcast_sta(mvm, vif);
2211         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2212         if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2213                 iwl_mvm_rm_mcast_sta(mvm, vif);
2214         iwl_mvm_binding_remove_vif(mvm, vif);
2215
2216         iwl_mvm_power_update_mac(mvm);
2217
2218         iwl_mvm_mac_ctxt_remove(mvm, vif);
2219
2220         mutex_unlock(&mvm->mutex);
2221 }
2222
2223 static void
2224 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2225                                  struct ieee80211_vif *vif,
2226                                  struct ieee80211_bss_conf *bss_conf,
2227                                  u32 changes)
2228 {
2229         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2230
2231         /* Changes will be applied when the AP/IBSS is started */
2232         if (!mvmvif->ap_ibss_active)
2233                 return;
2234
2235         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2236                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2237             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2238                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2239
2240         /* Need to send a new beacon template to the FW */
2241         if (changes & BSS_CHANGED_BEACON &&
2242             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2243                 IWL_WARN(mvm, "Failed updating beacon data\n");
2244
2245         if (changes & BSS_CHANGED_TXPOWER) {
2246                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2247                                 bss_conf->txpower);
2248                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2249         }
2250 }
2251
2252 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2253                                      struct ieee80211_vif *vif,
2254                                      struct ieee80211_bss_conf *bss_conf,
2255                                      u32 changes)
2256 {
2257         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2258
2259         /*
2260          * iwl_mvm_bss_info_changed_station() might call
2261          * iwl_mvm_protect_session(), which reads directly from
2262          * the device (the system time), so make sure it is available.
2263          */
2264         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2265                 return;
2266
2267         mutex_lock(&mvm->mutex);
2268
2269         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2270                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2271
2272         switch (vif->type) {
2273         case NL80211_IFTYPE_STATION:
2274                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2275                 break;
2276         case NL80211_IFTYPE_AP:
2277         case NL80211_IFTYPE_ADHOC:
2278                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2279                 break;
2280         case NL80211_IFTYPE_MONITOR:
2281                 if (changes & BSS_CHANGED_MU_GROUPS)
2282                         iwl_mvm_update_mu_groups(mvm, vif);
2283                 break;
2284         default:
2285                 /* shouldn't happen */
2286                 WARN_ON_ONCE(1);
2287         }
2288
2289         mutex_unlock(&mvm->mutex);
2290         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2291 }
2292
2293 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2294                                struct ieee80211_vif *vif,
2295                                struct ieee80211_scan_request *hw_req)
2296 {
2297         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2298         int ret;
2299
2300         if (hw_req->req.n_channels == 0 ||
2301             hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2302                 return -EINVAL;
2303
2304         mutex_lock(&mvm->mutex);
2305         ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2306         mutex_unlock(&mvm->mutex);
2307
2308         return ret;
2309 }
2310
2311 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2312                                        struct ieee80211_vif *vif)
2313 {
2314         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2315
2316         mutex_lock(&mvm->mutex);
2317
2318         /* Due to a race condition, it's possible that mac80211 asks
2319          * us to stop a hw_scan when it's already stopped.  This can
2320          * happen, for instance, if we stopped the scan ourselves,
2321          * called ieee80211_scan_completed() and the userspace called
2322          * cancel scan scan before ieee80211_scan_work() could run.
2323          * To handle that, simply return if the scan is not running.
2324         */
2325         if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2326                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2327
2328         mutex_unlock(&mvm->mutex);
2329 }
2330
2331 static void
2332 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2333                                   struct ieee80211_sta *sta, u16 tids,
2334                                   int num_frames,
2335                                   enum ieee80211_frame_release_type reason,
2336                                   bool more_data)
2337 {
2338         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2339
2340         /* Called when we need to transmit (a) frame(s) from mac80211 */
2341
2342         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2343                                           tids, more_data, false);
2344 }
2345
2346 static void
2347 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2348                                     struct ieee80211_sta *sta, u16 tids,
2349                                     int num_frames,
2350                                     enum ieee80211_frame_release_type reason,
2351                                     bool more_data)
2352 {
2353         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2354
2355         /* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2356
2357         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2358                                           tids, more_data, true);
2359 }
2360
2361 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2362                                      enum sta_notify_cmd cmd,
2363                                      struct ieee80211_sta *sta)
2364 {
2365         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2366         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2367         unsigned long txqs = 0, tids = 0;
2368         int tid;
2369
2370         spin_lock_bh(&mvmsta->lock);
2371         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2372                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2373
2374                 if (!iwl_mvm_is_dqa_supported(mvm) &&
2375                     tid_data->state != IWL_AGG_ON &&
2376                     tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2377                         continue;
2378
2379                 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
2380                         continue;
2381
2382                 __set_bit(tid_data->txq_id, &txqs);
2383
2384                 if (iwl_mvm_tid_queued(tid_data) == 0)
2385                         continue;
2386
2387                 __set_bit(tid, &tids);
2388         }
2389
2390         switch (cmd) {
2391         case STA_NOTIFY_SLEEP:
2392                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2393                         ieee80211_sta_block_awake(hw, sta, true);
2394
2395                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2396                         ieee80211_sta_set_buffered(sta, tid, true);
2397
2398                 if (txqs)
2399                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2400                 /*
2401                  * The fw updates the STA to be asleep. Tx packets on the Tx
2402                  * queues to this station will not be transmitted. The fw will
2403                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2404                  */
2405                 break;
2406         case STA_NOTIFY_AWAKE:
2407                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
2408                         break;
2409
2410                 if (txqs)
2411                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2412                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2413                 break;
2414         default:
2415                 break;
2416         }
2417         spin_unlock_bh(&mvmsta->lock);
2418 }
2419
2420 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2421                                    struct ieee80211_vif *vif,
2422                                    enum sta_notify_cmd cmd,
2423                                    struct ieee80211_sta *sta)
2424 {
2425         __iwl_mvm_mac_sta_notify(hw, cmd, sta);
2426 }
2427
2428 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2429 {
2430         struct iwl_rx_packet *pkt = rxb_addr(rxb);
2431         struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
2432         struct ieee80211_sta *sta;
2433         struct iwl_mvm_sta *mvmsta;
2434         bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
2435
2436         if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
2437                 return;
2438
2439         rcu_read_lock();
2440         sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2441         if (WARN_ON(IS_ERR_OR_NULL(sta))) {
2442                 rcu_read_unlock();
2443                 return;
2444         }
2445
2446         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2447
2448         if (!mvmsta->vif ||
2449             mvmsta->vif->type != NL80211_IFTYPE_AP) {
2450                 rcu_read_unlock();
2451                 return;
2452         }
2453
2454         if (mvmsta->sleeping != sleeping) {
2455                 mvmsta->sleeping = sleeping;
2456                 __iwl_mvm_mac_sta_notify(mvm->hw,
2457                         sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
2458                         sta);
2459                 ieee80211_sta_ps_transition(sta, sleeping);
2460         }
2461
2462         if (sleeping) {
2463                 switch (notif->type) {
2464                 case IWL_MVM_PM_EVENT_AWAKE:
2465                 case IWL_MVM_PM_EVENT_ASLEEP:
2466                         break;
2467                 case IWL_MVM_PM_EVENT_UAPSD:
2468                         ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
2469                         break;
2470                 case IWL_MVM_PM_EVENT_PS_POLL:
2471                         ieee80211_sta_pspoll(sta);
2472                         break;
2473                 default:
2474                         break;
2475                 }
2476         }
2477
2478         rcu_read_unlock();
2479 }
2480
2481 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2482                                        struct ieee80211_vif *vif,
2483                                        struct ieee80211_sta *sta)
2484 {
2485         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2486         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2487
2488         /*
2489          * This is called before mac80211 does RCU synchronisation,
2490          * so here we already invalidate our internal RCU-protected
2491          * station pointer. The rest of the code will thus no longer
2492          * be able to find the station this way, and we don't rely
2493          * on further RCU synchronisation after the sta_state()
2494          * callback deleted the station.
2495          */
2496         mutex_lock(&mvm->mutex);
2497         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2498                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2499                                    ERR_PTR(-ENOENT));
2500
2501         mutex_unlock(&mvm->mutex);
2502 }
2503
2504 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2505                                 const u8 *bssid)
2506 {
2507         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2508                 return;
2509
2510         if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2511                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2512                 return;
2513         }
2514
2515         if (!vif->p2p &&
2516             (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2517                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2518                 return;
2519         }
2520
2521         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2522 }
2523
2524 static void
2525 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2526                            struct ieee80211_vif *vif, u8 *peer_addr,
2527                            enum nl80211_tdls_operation action)
2528 {
2529         struct iwl_fw_dbg_trigger_tlv *trig;
2530         struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2531
2532         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2533                 return;
2534
2535         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2536         tdls_trig = (void *)trig->data;
2537         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
2538                 return;
2539
2540         if (!(tdls_trig->action_bitmap & BIT(action)))
2541                 return;
2542
2543         if (tdls_trig->peer_mode &&
2544             memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2545                 return;
2546
2547         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
2548                                     "TDLS event occurred, peer %pM, action %d",
2549                                     peer_addr, action);
2550 }
2551
2552 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm,
2553                                              struct iwl_mvm_sta *mvm_sta)
2554 {
2555         struct iwl_mvm_tid_data *tid_data;
2556         struct sk_buff *skb;
2557         int i;
2558
2559         spin_lock_bh(&mvm_sta->lock);
2560         for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
2561                 tid_data = &mvm_sta->tid_data[i];
2562                 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames)))
2563                         ieee80211_free_txskb(mvm->hw, skb);
2564         }
2565         spin_unlock_bh(&mvm_sta->lock);
2566 }
2567
2568 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2569                                  struct ieee80211_vif *vif,
2570                                  struct ieee80211_sta *sta,
2571                                  enum ieee80211_sta_state old_state,
2572                                  enum ieee80211_sta_state new_state)
2573 {
2574         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2575         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2576         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2577         int ret;
2578
2579         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2580                            sta->addr, old_state, new_state);
2581
2582         /* this would be a mac80211 bug ... but don't crash */
2583         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2584                 return -EINVAL;
2585
2586         /* if a STA is being removed, reuse its ID */
2587         flush_work(&mvm->sta_drained_wk);
2588
2589         /*
2590          * If we are in a STA removal flow and in DQA mode:
2591          *
2592          * This is after the sync_rcu part, so the queues have already been
2593          * flushed. No more TXs on their way in mac80211's path, and no more in
2594          * the queues.
2595          * Also, we won't be getting any new TX frames for this station.
2596          * What we might have are deferred TX frames that need to be taken care
2597          * of.
2598          *
2599          * Drop any still-queued deferred-frame before removing the STA, and
2600          * make sure the worker is no longer handling frames for this STA.
2601          */
2602         if (old_state == IEEE80211_STA_NONE &&
2603             new_state == IEEE80211_STA_NOTEXIST &&
2604             iwl_mvm_is_dqa_supported(mvm)) {
2605                 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta);
2606                 flush_work(&mvm->add_stream_wk);
2607
2608                 /*
2609                  * No need to make sure deferred TX indication is off since the
2610                  * worker will already remove it if it was on
2611                  */
2612         }
2613
2614         mutex_lock(&mvm->mutex);
2615         /* track whether or not the station is associated */
2616         mvm_sta->associated = new_state >= IEEE80211_STA_ASSOC;
2617
2618         if (old_state == IEEE80211_STA_NOTEXIST &&
2619             new_state == IEEE80211_STA_NONE) {
2620                 /*
2621                  * Firmware bug - it'll crash if the beacon interval is less
2622                  * than 16. We can't avoid connecting at all, so refuse the
2623                  * station state change, this will cause mac80211 to abandon
2624                  * attempts to connect to this AP, and eventually wpa_s will
2625                  * blacklist the AP...
2626                  */
2627                 if (vif->type == NL80211_IFTYPE_STATION &&
2628                     vif->bss_conf.beacon_int < 16) {
2629                         IWL_ERR(mvm,
2630                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2631                                 sta->addr, vif->bss_conf.beacon_int);
2632                         ret = -EINVAL;
2633                         goto out_unlock;
2634                 }
2635
2636                 if (sta->tdls &&
2637                     (vif->p2p ||
2638                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2639                                                 IWL_MVM_TDLS_STA_COUNT ||
2640                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2641                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2642                         ret = -EBUSY;
2643                         goto out_unlock;
2644                 }
2645
2646                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2647                 if (sta->tdls && ret == 0) {
2648                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2649                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2650                                                    NL80211_TDLS_SETUP);
2651                 }
2652         } else if (old_state == IEEE80211_STA_NONE &&
2653                    new_state == IEEE80211_STA_AUTH) {
2654                 /*
2655                  * EBS may be disabled due to previous failures reported by FW.
2656                  * Reset EBS status here assuming environment has been changed.
2657                  */
2658                 mvm->last_ebs_successful = true;
2659                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2660                 ret = 0;
2661         } else if (old_state == IEEE80211_STA_AUTH &&
2662                    new_state == IEEE80211_STA_ASSOC) {
2663                 if (vif->type == NL80211_IFTYPE_AP) {
2664                         mvmvif->ap_assoc_sta_count++;
2665                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2666                 }
2667
2668                 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
2669                                      true);
2670                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2671         } else if (old_state == IEEE80211_STA_ASSOC &&
2672                    new_state == IEEE80211_STA_AUTHORIZED) {
2673
2674                 /* we don't support TDLS during DCM */
2675                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2676                         iwl_mvm_teardown_tdls_peers(mvm);
2677
2678                 if (sta->tdls)
2679                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2680                                                    NL80211_TDLS_ENABLE_LINK);
2681
2682                 /* enable beacon filtering */
2683                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2684                 ret = 0;
2685         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2686                    new_state == IEEE80211_STA_ASSOC) {
2687                 /* disable beacon filtering */
2688                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2689                 ret = 0;
2690         } else if (old_state == IEEE80211_STA_ASSOC &&
2691                    new_state == IEEE80211_STA_AUTH) {
2692                 if (vif->type == NL80211_IFTYPE_AP) {
2693                         mvmvif->ap_assoc_sta_count--;
2694                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2695                 }
2696                 ret = 0;
2697         } else if (old_state == IEEE80211_STA_AUTH &&
2698                    new_state == IEEE80211_STA_NONE) {
2699                 ret = 0;
2700         } else if (old_state == IEEE80211_STA_NONE &&
2701                    new_state == IEEE80211_STA_NOTEXIST) {
2702                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2703                 if (sta->tdls) {
2704                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2705                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2706                                                    NL80211_TDLS_DISABLE_LINK);
2707                 }
2708         } else {
2709                 ret = -EIO;
2710         }
2711  out_unlock:
2712         mutex_unlock(&mvm->mutex);
2713
2714         if (sta->tdls && ret == 0) {
2715                 if (old_state == IEEE80211_STA_NOTEXIST &&
2716                     new_state == IEEE80211_STA_NONE)
2717                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2718                 else if (old_state == IEEE80211_STA_NONE &&
2719                          new_state == IEEE80211_STA_NOTEXIST)
2720                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2721         }
2722
2723         return ret;
2724 }
2725
2726 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2727 {
2728         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2729
2730         mvm->rts_threshold = value;
2731
2732         return 0;
2733 }
2734
2735 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2736                                   struct ieee80211_vif *vif,
2737                                   struct ieee80211_sta *sta, u32 changed)
2738 {
2739         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2740
2741         if (vif->type == NL80211_IFTYPE_STATION &&
2742             changed & IEEE80211_RC_NSS_CHANGED)
2743                 iwl_mvm_sf_update(mvm, vif, false);
2744 }
2745
2746 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2747                                struct ieee80211_vif *vif, u16 ac,
2748                                const struct ieee80211_tx_queue_params *params)
2749 {
2750         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2751         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2752
2753         mvmvif->queue_params[ac] = *params;
2754
2755         /*
2756          * No need to update right away, we'll get BSS_CHANGED_QOS
2757          * The exception is P2P_DEVICE interface which needs immediate update.
2758          */
2759         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2760                 int ret;
2761
2762                 mutex_lock(&mvm->mutex);
2763                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2764                 mutex_unlock(&mvm->mutex);
2765                 return ret;
2766         }
2767         return 0;
2768 }
2769
2770 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2771                                       struct ieee80211_vif *vif)
2772 {
2773         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2774         u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2775         u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2776
2777         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2778                 return;
2779
2780         /*
2781          * iwl_mvm_protect_session() reads directly from the device
2782          * (the system time), so make sure it is available.
2783          */
2784         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2785                 return;
2786
2787         mutex_lock(&mvm->mutex);
2788         /* Try really hard to protect the session and hear a beacon */
2789         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2790         mutex_unlock(&mvm->mutex);
2791
2792         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2793 }
2794
2795 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2796                                         struct ieee80211_vif *vif,
2797                                         struct cfg80211_sched_scan_request *req,
2798                                         struct ieee80211_scan_ies *ies)
2799 {
2800         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2801
2802         int ret;
2803
2804         mutex_lock(&mvm->mutex);
2805
2806         if (!vif->bss_conf.idle) {
2807                 ret = -EBUSY;
2808                 goto out;
2809         }
2810
2811         ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2812
2813 out:
2814         mutex_unlock(&mvm->mutex);
2815         return ret;
2816 }
2817
2818 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2819                                        struct ieee80211_vif *vif)
2820 {
2821         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2822         int ret;
2823
2824         mutex_lock(&mvm->mutex);
2825
2826         /* Due to a race condition, it's possible that mac80211 asks
2827          * us to stop a sched_scan when it's already stopped.  This
2828          * can happen, for instance, if we stopped the scan ourselves,
2829          * called ieee80211_sched_scan_stopped() and the userspace called
2830          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2831          * could run.  To handle this, simply return if the scan is
2832          * not running.
2833         */
2834         if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2835                 mutex_unlock(&mvm->mutex);
2836                 return 0;
2837         }
2838
2839         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2840         mutex_unlock(&mvm->mutex);
2841         iwl_mvm_wait_for_async_handlers(mvm);
2842
2843         return ret;
2844 }
2845
2846 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2847                                enum set_key_cmd cmd,
2848                                struct ieee80211_vif *vif,
2849                                struct ieee80211_sta *sta,
2850                                struct ieee80211_key_conf *key)
2851 {
2852         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2853         struct iwl_mvm_sta *mvmsta;
2854         struct iwl_mvm_key_pn *ptk_pn;
2855         int keyidx = key->keyidx;
2856         int ret;
2857         u8 key_offset;
2858
2859         if (iwlwifi_mod_params.sw_crypto) {
2860                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2861                 return -EOPNOTSUPP;
2862         }
2863
2864         switch (key->cipher) {
2865         case WLAN_CIPHER_SUITE_TKIP:
2866                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2867                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2868                 break;
2869         case WLAN_CIPHER_SUITE_CCMP:
2870         case WLAN_CIPHER_SUITE_GCMP:
2871         case WLAN_CIPHER_SUITE_GCMP_256:
2872                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2873                 break;
2874         case WLAN_CIPHER_SUITE_AES_CMAC:
2875         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
2876         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
2877                 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
2878                 break;
2879         case WLAN_CIPHER_SUITE_WEP40:
2880         case WLAN_CIPHER_SUITE_WEP104:
2881                 /* For non-client mode, only use WEP keys for TX as we probably
2882                  * don't have a station yet anyway and would then have to keep
2883                  * track of the keys, linking them to each of the clients/peers
2884                  * as they appear. For now, don't do that, for performance WEP
2885                  * offload doesn't really matter much, but we need it for some
2886                  * other offload features in client mode.
2887                  */
2888                 if (vif->type != NL80211_IFTYPE_STATION)
2889                         return 0;
2890                 break;
2891         default:
2892                 /* currently FW supports only one optional cipher scheme */
2893                 if (hw->n_cipher_schemes &&
2894                     hw->cipher_schemes->cipher == key->cipher)
2895                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2896                 else
2897                         return -EOPNOTSUPP;
2898         }
2899
2900         mutex_lock(&mvm->mutex);
2901
2902         switch (cmd) {
2903         case SET_KEY:
2904                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2905                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2906                         /*
2907                          * GTK on AP interface is a TX-only key, return 0;
2908                          * on IBSS they're per-station and because we're lazy
2909                          * we don't support them for RX, so do the same.
2910                          * CMAC/GMAC in AP/IBSS modes must be done in software.
2911                          */
2912                         if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
2913                             key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
2914                             key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
2915                                 ret = -EOPNOTSUPP;
2916                         else
2917                                 ret = 0;
2918                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2919                         break;
2920                 }
2921
2922                 /* During FW restart, in order to restore the state as it was,
2923                  * don't try to reprogram keys we previously failed for.
2924                  */
2925                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2926                     key->hw_key_idx == STA_KEY_IDX_INVALID) {
2927                         IWL_DEBUG_MAC80211(mvm,
2928                                            "skip invalid idx key programming during restart\n");
2929                         ret = 0;
2930                         break;
2931                 }
2932
2933                 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2934                     sta && iwl_mvm_has_new_rx_api(mvm) &&
2935                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2936                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2937                      key->cipher == WLAN_CIPHER_SUITE_GCMP ||
2938                      key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
2939                         struct ieee80211_key_seq seq;
2940                         int tid, q;
2941
2942                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2943                         WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
2944                         ptk_pn = kzalloc(sizeof(*ptk_pn) +
2945                                          mvm->trans->num_rx_queues *
2946                                                 sizeof(ptk_pn->q[0]),
2947                                          GFP_KERNEL);
2948                         if (!ptk_pn) {
2949                                 ret = -ENOMEM;
2950                                 break;
2951                         }
2952
2953                         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2954                                 ieee80211_get_key_rx_seq(key, tid, &seq);
2955                                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
2956                                         memcpy(ptk_pn->q[q].pn[tid],
2957                                                seq.ccmp.pn,
2958                                                IEEE80211_CCMP_PN_LEN);
2959                         }
2960
2961                         rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
2962                 }
2963
2964                 /* in HW restart reuse the index, otherwise request a new one */
2965                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
2966                         key_offset = key->hw_key_idx;
2967                 else
2968                         key_offset = STA_KEY_IDX_INVALID;
2969
2970                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2971                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
2972                 if (ret) {
2973                         IWL_WARN(mvm, "set key failed\n");
2974                         /*
2975                          * can't add key for RX, but we don't need it
2976                          * in the device for TX so still return 0
2977                          */
2978                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2979                         ret = 0;
2980                 }
2981
2982                 break;
2983         case DISABLE_KEY:
2984                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2985                         ret = 0;
2986                         break;
2987                 }
2988
2989                 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
2990                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
2991                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
2992                      key->cipher == WLAN_CIPHER_SUITE_GCMP ||
2993                      key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
2994                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2995                         ptk_pn = rcu_dereference_protected(
2996                                                 mvmsta->ptk_pn[keyidx],
2997                                                 lockdep_is_held(&mvm->mutex));
2998                         RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
2999                         if (ptk_pn)
3000                                 kfree_rcu(ptk_pn, rcu_head);
3001                 }
3002
3003                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
3004                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
3005                 break;
3006         default:
3007                 ret = -EINVAL;
3008         }
3009
3010         mutex_unlock(&mvm->mutex);
3011         return ret;
3012 }
3013
3014 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3015                                         struct ieee80211_vif *vif,
3016                                         struct ieee80211_key_conf *keyconf,
3017                                         struct ieee80211_sta *sta,
3018                                         u32 iv32, u16 *phase1key)
3019 {
3020         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3021
3022         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3023                 return;
3024
3025         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3026 }
3027
3028
3029 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3030                                struct iwl_rx_packet *pkt, void *data)
3031 {
3032         struct iwl_mvm *mvm =
3033                 container_of(notif_wait, struct iwl_mvm, notif_wait);
3034         struct iwl_hs20_roc_res *resp;
3035         int resp_len = iwl_rx_packet_payload_len(pkt);
3036         struct iwl_mvm_time_event_data *te_data = data;
3037
3038         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3039                 return true;
3040
3041         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3042                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3043                 return true;
3044         }
3045
3046         resp = (void *)pkt->data;
3047
3048         IWL_DEBUG_TE(mvm,
3049                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
3050                      resp->status, resp->event_unique_id);
3051
3052         te_data->uid = le32_to_cpu(resp->event_unique_id);
3053         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3054                      te_data->uid);
3055
3056         spin_lock_bh(&mvm->time_event_lock);
3057         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3058         spin_unlock_bh(&mvm->time_event_lock);
3059
3060         return true;
3061 }
3062
3063 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
3064 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
3065 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
3066 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
3067 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
3068 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3069                                     struct ieee80211_channel *channel,
3070                                     struct ieee80211_vif *vif,
3071                                     int duration)
3072 {
3073         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3074         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3075         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3076         static const u16 time_event_response[] = { HOT_SPOT_CMD };
3077         struct iwl_notification_wait wait_time_event;
3078         u32 dtim_interval = vif->bss_conf.dtim_period *
3079                 vif->bss_conf.beacon_int;
3080         u32 req_dur, delay;
3081         struct iwl_hs20_roc_req aux_roc_req = {
3082                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3083                 .id_and_color =
3084                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3085                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3086                 /* Set the channel info data */
3087                 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
3088                         PHY_BAND_24 : PHY_BAND_5,
3089                 .channel_info.channel = channel->hw_value,
3090                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3091                 /* Set the time and duration */
3092                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3093          };
3094
3095         delay = AUX_ROC_MIN_DELAY;
3096         req_dur = MSEC_TO_TU(duration);
3097
3098         /*
3099          * If we are associated we want the delay time to be at least one
3100          * dtim interval so that the FW can wait until after the DTIM and
3101          * then start the time event, this will potentially allow us to
3102          * remain off-channel for the max duration.
3103          * Since we want to use almost a whole dtim interval we would also
3104          * like the delay to be for 2-3 dtim intervals, in case there are
3105          * other time events with higher priority.
3106          */
3107         if (vif->bss_conf.assoc) {
3108                 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
3109                 /* We cannot remain off-channel longer than the DTIM interval */
3110                 if (dtim_interval <= req_dur) {
3111                         req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
3112                         if (req_dur <= AUX_ROC_MIN_DURATION)
3113                                 req_dur = dtim_interval -
3114                                         AUX_ROC_MIN_SAFETY_BUFFER;
3115                 }
3116         }
3117
3118         aux_roc_req.duration = cpu_to_le32(req_dur);
3119         aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
3120
3121         IWL_DEBUG_TE(mvm,
3122                      "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3123                      channel->hw_value, req_dur, duration, delay,
3124                      dtim_interval);
3125         /* Set the node address */
3126         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3127
3128         lockdep_assert_held(&mvm->mutex);
3129
3130         spin_lock_bh(&mvm->time_event_lock);
3131
3132         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3133                 spin_unlock_bh(&mvm->time_event_lock);
3134                 return -EIO;
3135         }
3136
3137         te_data->vif = vif;
3138         te_data->duration = duration;
3139         te_data->id = HOT_SPOT_CMD;
3140
3141         spin_unlock_bh(&mvm->time_event_lock);
3142
3143         /*
3144          * Use a notification wait, which really just processes the
3145          * command response and doesn't wait for anything, in order
3146          * to be able to process the response and get the UID inside
3147          * the RX path. Using CMD_WANT_SKB doesn't work because it
3148          * stores the buffer and then wakes up this thread, by which
3149          * time another notification (that the time event started)
3150          * might already be processed unsuccessfully.
3151          */
3152         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3153                                    time_event_response,
3154                                    ARRAY_SIZE(time_event_response),
3155                                    iwl_mvm_rx_aux_roc, te_data);
3156
3157         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3158                                    &aux_roc_req);
3159
3160         if (res) {
3161                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3162                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3163                 goto out_clear_te;
3164         }
3165
3166         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3167         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3168         /* should never fail */
3169         WARN_ON_ONCE(res);
3170
3171         if (res) {
3172  out_clear_te:
3173                 spin_lock_bh(&mvm->time_event_lock);
3174                 iwl_mvm_te_clear_data(mvm, te_data);
3175                 spin_unlock_bh(&mvm->time_event_lock);
3176         }
3177
3178         return res;
3179 }
3180
3181 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3182                        struct ieee80211_vif *vif,
3183                        struct ieee80211_channel *channel,
3184                        int duration,
3185                        enum ieee80211_roc_type type)
3186 {
3187         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3188         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3189         struct cfg80211_chan_def chandef;
3190         struct iwl_mvm_phy_ctxt *phy_ctxt;
3191         int ret, i;
3192
3193         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3194                            duration, type);
3195
3196         flush_work(&mvm->roc_done_wk);
3197
3198         mutex_lock(&mvm->mutex);
3199
3200         switch (vif->type) {
3201         case NL80211_IFTYPE_STATION:
3202                 if (fw_has_capa(&mvm->fw->ucode_capa,
3203                                 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3204                         /* Use aux roc framework (HS20) */
3205                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3206                                                        vif, duration);
3207                         goto out_unlock;
3208                 }
3209                 IWL_ERR(mvm, "hotspot not supported\n");
3210                 ret = -EINVAL;
3211                 goto out_unlock;
3212         case NL80211_IFTYPE_P2P_DEVICE:
3213                 /* handle below */
3214                 break;
3215         default:
3216                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3217                 ret = -EINVAL;
3218                 goto out_unlock;
3219         }
3220
3221         for (i = 0; i < NUM_PHY_CTX; i++) {
3222                 phy_ctxt = &mvm->phy_ctxts[i];
3223                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3224                         continue;
3225
3226                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3227                         /*
3228                          * Unbind the P2P_DEVICE from the current PHY context,
3229                          * and if the PHY context is not used remove it.
3230                          */
3231                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
3232                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3233                                 goto out_unlock;
3234
3235                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3236
3237                         /* Bind the P2P_DEVICE to the current PHY Context */
3238                         mvmvif->phy_ctxt = phy_ctxt;
3239
3240                         ret = iwl_mvm_binding_add_vif(mvm, vif);
3241                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3242                                 goto out_unlock;
3243
3244                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3245                         goto schedule_time_event;
3246                 }
3247         }
3248
3249         /* Need to update the PHY context only if the ROC channel changed */
3250         if (channel == mvmvif->phy_ctxt->channel)
3251                 goto schedule_time_event;
3252
3253         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3254
3255         /*
3256          * Change the PHY context configuration as it is currently referenced
3257          * only by the P2P Device MAC
3258          */
3259         if (mvmvif->phy_ctxt->ref == 1) {
3260                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3261                                                &chandef, 1, 1);
3262                 if (ret)
3263                         goto out_unlock;
3264         } else {
3265                 /*
3266                  * The PHY context is shared with other MACs. Need to remove the
3267                  * P2P Device from the binding, allocate an new PHY context and
3268                  * create a new binding
3269                  */
3270                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3271                 if (!phy_ctxt) {
3272                         ret = -ENOSPC;
3273                         goto out_unlock;
3274                 }
3275
3276                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3277                                                1, 1);
3278                 if (ret) {
3279                         IWL_ERR(mvm, "Failed to change PHY context\n");
3280                         goto out_unlock;
3281                 }
3282
3283                 /* Unbind the P2P_DEVICE from the current PHY context */
3284                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3285                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3286                         goto out_unlock;
3287
3288                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3289
3290                 /* Bind the P2P_DEVICE to the new allocated PHY context */
3291                 mvmvif->phy_ctxt = phy_ctxt;
3292
3293                 ret = iwl_mvm_binding_add_vif(mvm, vif);
3294                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3295                         goto out_unlock;
3296
3297                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3298         }
3299
3300 schedule_time_event:
3301         /* Schedule the time events */
3302         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3303
3304 out_unlock:
3305         mutex_unlock(&mvm->mutex);
3306         IWL_DEBUG_MAC80211(mvm, "leave\n");
3307         return ret;
3308 }
3309
3310 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3311 {
3312         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3313
3314         IWL_DEBUG_MAC80211(mvm, "enter\n");
3315
3316         mutex_lock(&mvm->mutex);
3317         iwl_mvm_stop_roc(mvm);
3318         mutex_unlock(&mvm->mutex);
3319
3320         IWL_DEBUG_MAC80211(mvm, "leave\n");
3321         return 0;
3322 }
3323
3324 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3325                                  struct ieee80211_chanctx_conf *ctx)
3326 {
3327         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3328         struct iwl_mvm_phy_ctxt *phy_ctxt;
3329         int ret;
3330
3331         lockdep_assert_held(&mvm->mutex);
3332
3333         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3334
3335         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3336         if (!phy_ctxt) {
3337                 ret = -ENOSPC;
3338                 goto out;
3339         }
3340
3341         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3342                                        ctx->rx_chains_static,
3343                                        ctx->rx_chains_dynamic);
3344         if (ret) {
3345                 IWL_ERR(mvm, "Failed to add PHY context\n");
3346                 goto out;
3347         }
3348
3349         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3350         *phy_ctxt_id = phy_ctxt->id;
3351 out:
3352         return ret;
3353 }
3354
3355 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3356                                struct ieee80211_chanctx_conf *ctx)
3357 {
3358         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3359         int ret;
3360
3361         mutex_lock(&mvm->mutex);
3362         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3363         mutex_unlock(&mvm->mutex);
3364
3365         return ret;
3366 }
3367
3368 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3369                                      struct ieee80211_chanctx_conf *ctx)
3370 {
3371         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3372         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3373
3374         lockdep_assert_held(&mvm->mutex);
3375
3376         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3377 }
3378
3379 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3380                                    struct ieee80211_chanctx_conf *ctx)
3381 {
3382         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3383
3384         mutex_lock(&mvm->mutex);
3385         __iwl_mvm_remove_chanctx(mvm, ctx);
3386         mutex_unlock(&mvm->mutex);
3387 }
3388
3389 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3390                                    struct ieee80211_chanctx_conf *ctx,
3391                                    u32 changed)
3392 {
3393         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3394         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3395         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3396
3397         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3398                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3399                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3400                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3401                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3402                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3403                       phy_ctxt->ref, changed))
3404                 return;
3405
3406         mutex_lock(&mvm->mutex);
3407         iwl_mvm_bt_coex_vif_change(mvm);
3408         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3409                                  ctx->rx_chains_static,
3410                                  ctx->rx_chains_dynamic);
3411         mutex_unlock(&mvm->mutex);
3412 }
3413
3414 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3415                                         struct ieee80211_vif *vif,
3416                                         struct ieee80211_chanctx_conf *ctx,
3417                                         bool switching_chanctx)
3418 {
3419         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3420         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3421         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3422         int ret;
3423
3424         lockdep_assert_held(&mvm->mutex);
3425
3426         mvmvif->phy_ctxt = phy_ctxt;
3427
3428         switch (vif->type) {
3429         case NL80211_IFTYPE_AP:
3430                 /* only needed if we're switching chanctx (i.e. during CSA) */
3431                 if (switching_chanctx) {
3432                         mvmvif->ap_ibss_active = true;
3433                         break;
3434                 }
3435         case NL80211_IFTYPE_ADHOC:
3436                 /*
3437                  * The AP binding flow is handled as part of the start_ap flow
3438                  * (in bss_info_changed), similarly for IBSS.
3439                  */
3440                 ret = 0;
3441                 goto out;
3442         case NL80211_IFTYPE_STATION:
3443                 break;
3444         case NL80211_IFTYPE_MONITOR:
3445                 /* always disable PS when a monitor interface is active */
3446                 mvmvif->ps_disabled = true;
3447                 break;
3448         default:
3449                 ret = -EINVAL;
3450                 goto out;
3451         }
3452
3453         ret = iwl_mvm_binding_add_vif(mvm, vif);
3454         if (ret)
3455                 goto out;
3456
3457         /*
3458          * Power state must be updated before quotas,
3459          * otherwise fw will complain.
3460          */
3461         iwl_mvm_power_update_mac(mvm);
3462
3463         /* Setting the quota at this stage is only required for monitor
3464          * interfaces. For the other types, the bss_info changed flow
3465          * will handle quota settings.
3466          */
3467         if (vif->type == NL80211_IFTYPE_MONITOR) {
3468                 mvmvif->monitor_active = true;
3469                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3470                 if (ret)
3471                         goto out_remove_binding;
3472
3473                 ret = iwl_mvm_add_snif_sta(mvm, vif);
3474                 if (ret)
3475                         goto out_remove_binding;
3476
3477         }
3478
3479         /* Handle binding during CSA */
3480         if (vif->type == NL80211_IFTYPE_AP) {
3481                 iwl_mvm_update_quotas(mvm, false, NULL);
3482                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3483         }
3484
3485         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3486                 u32 duration = 2 * vif->bss_conf.beacon_int;
3487
3488                 /* iwl_mvm_protect_session() reads directly from the
3489                  * device (the system time), so make sure it is
3490                  * available.
3491                  */
3492                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3493                 if (ret)
3494                         goto out_remove_binding;
3495
3496                 /* Protect the session to make sure we hear the first
3497                  * beacon on the new channel.
3498                  */
3499                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3500                                         vif->bss_conf.beacon_int / 2,
3501                                         true);
3502
3503                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3504
3505                 iwl_mvm_update_quotas(mvm, false, NULL);
3506         }
3507
3508         goto out;
3509
3510 out_remove_binding:
3511         iwl_mvm_binding_remove_vif(mvm, vif);
3512         iwl_mvm_power_update_mac(mvm);
3513 out:
3514         if (ret)
3515                 mvmvif->phy_ctxt = NULL;
3516         return ret;
3517 }
3518 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3519                                       struct ieee80211_vif *vif,
3520                                       struct ieee80211_chanctx_conf *ctx)
3521 {
3522         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3523         int ret;
3524
3525         mutex_lock(&mvm->mutex);
3526         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3527         mutex_unlock(&mvm->mutex);
3528
3529         return ret;
3530 }
3531
3532 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3533                                            struct ieee80211_vif *vif,
3534                                            struct ieee80211_chanctx_conf *ctx,
3535                                            bool switching_chanctx)
3536 {
3537         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3538         struct ieee80211_vif *disabled_vif = NULL;
3539
3540         lockdep_assert_held(&mvm->mutex);
3541
3542         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3543
3544         switch (vif->type) {
3545         case NL80211_IFTYPE_ADHOC:
3546                 goto out;
3547         case NL80211_IFTYPE_MONITOR:
3548                 mvmvif->monitor_active = false;
3549                 mvmvif->ps_disabled = false;
3550                 iwl_mvm_rm_snif_sta(mvm, vif);
3551                 break;
3552         case NL80211_IFTYPE_AP:
3553                 /* This part is triggered only during CSA */
3554                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3555                         goto out;
3556
3557                 mvmvif->csa_countdown = false;
3558
3559                 /* Set CS bit on all the stations */
3560                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3561
3562                 /* Save blocked iface, the timeout is set on the next beacon */
3563                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3564
3565                 mvmvif->ap_ibss_active = false;
3566                 break;
3567         case NL80211_IFTYPE_STATION:
3568                 if (!switching_chanctx)
3569                         break;
3570
3571                 disabled_vif = vif;
3572
3573                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3574                 break;
3575         default:
3576                 break;
3577         }
3578
3579         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3580         iwl_mvm_binding_remove_vif(mvm, vif);
3581
3582 out:
3583         mvmvif->phy_ctxt = NULL;
3584         iwl_mvm_power_update_mac(mvm);
3585 }
3586
3587 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3588                                          struct ieee80211_vif *vif,
3589                                          struct ieee80211_chanctx_conf *ctx)
3590 {
3591         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3592
3593         mutex_lock(&mvm->mutex);
3594         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3595         mutex_unlock(&mvm->mutex);
3596 }
3597
3598 static int
3599 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3600                                 struct ieee80211_vif_chanctx_switch *vifs)
3601 {
3602         int ret;
3603
3604         mutex_lock(&mvm->mutex);
3605         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3606         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3607
3608         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3609         if (ret) {
3610                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3611                 goto out_reassign;
3612         }
3613
3614         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3615                                            true);
3616         if (ret) {
3617                 IWL_ERR(mvm,
3618                         "failed to assign new_ctx during channel switch\n");
3619                 goto out_remove;
3620         }
3621
3622         /* we don't support TDLS during DCM - can be caused by channel switch */
3623         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3624                 iwl_mvm_teardown_tdls_peers(mvm);
3625
3626         goto out;
3627
3628 out_remove:
3629         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3630
3631 out_reassign:
3632         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3633                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3634                 goto out_restart;
3635         }
3636
3637         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3638                                          true)) {
3639                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3640                 goto out_restart;
3641         }
3642
3643         goto out;
3644
3645 out_restart:
3646         /* things keep failing, better restart the hw */
3647         iwl_mvm_nic_restart(mvm, false);
3648
3649 out:
3650         mutex_unlock(&mvm->mutex);
3651
3652         return ret;
3653 }
3654
3655 static int
3656 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3657                                     struct ieee80211_vif_chanctx_switch *vifs)
3658 {
3659         int ret;
3660
3661         mutex_lock(&mvm->mutex);
3662         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3663
3664         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3665                                            true);
3666         if (ret) {
3667                 IWL_ERR(mvm,
3668                         "failed to assign new_ctx during channel switch\n");
3669                 goto out_reassign;
3670         }
3671
3672         goto out;
3673
3674 out_reassign:
3675         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3676                                          true)) {
3677                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3678                 goto out_restart;
3679         }
3680
3681         goto out;
3682
3683 out_restart:
3684         /* things keep failing, better restart the hw */
3685         iwl_mvm_nic_restart(mvm, false);
3686
3687 out:
3688         mutex_unlock(&mvm->mutex);
3689
3690         return ret;
3691 }
3692
3693 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3694                                       struct ieee80211_vif_chanctx_switch *vifs,
3695                                       int n_vifs,
3696                                       enum ieee80211_chanctx_switch_mode mode)
3697 {
3698         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3699         int ret;
3700
3701         /* we only support a single-vif right now */
3702         if (n_vifs > 1)
3703                 return -EOPNOTSUPP;
3704
3705         switch (mode) {
3706         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3707                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3708                 break;
3709         case CHANCTX_SWMODE_REASSIGN_VIF:
3710                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3711                 break;
3712         default:
3713                 ret = -EOPNOTSUPP;
3714                 break;
3715         }
3716
3717         return ret;
3718 }
3719
3720 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3721                            struct ieee80211_sta *sta,
3722                            bool set)
3723 {
3724         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3725         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3726
3727         if (!mvm_sta || !mvm_sta->vif) {
3728                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3729                 return -EINVAL;
3730         }
3731
3732         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3733 }
3734
3735 #ifdef CONFIG_NL80211_TESTMODE
3736 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3737         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3738         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3739         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3740 };
3741
3742 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3743                                       struct ieee80211_vif *vif,
3744                                       void *data, int len)
3745 {
3746         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3747         int err;
3748         u32 noa_duration;
3749
3750         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy,
3751                         NULL);
3752         if (err)
3753                 return err;
3754
3755         if (!tb[IWL_MVM_TM_ATTR_CMD])
3756                 return -EINVAL;
3757
3758         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3759         case IWL_MVM_TM_CMD_SET_NOA:
3760                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3761                     !vif->bss_conf.enable_beacon ||
3762                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3763                         return -EINVAL;
3764
3765                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3766                 if (noa_duration >= vif->bss_conf.beacon_int)
3767                         return -EINVAL;
3768
3769                 mvm->noa_duration = noa_duration;
3770                 mvm->noa_vif = vif;
3771
3772                 return iwl_mvm_update_quotas(mvm, false, NULL);
3773         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3774                 /* must be associated client vif - ignore authorized */
3775                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3776                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3777                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3778                         return -EINVAL;
3779
3780                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3781                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3782                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3783         }
3784
3785         return -EOPNOTSUPP;
3786 }
3787
3788 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3789                                     struct ieee80211_vif *vif,
3790                                     void *data, int len)
3791 {
3792         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3793         int err;
3794
3795         mutex_lock(&mvm->mutex);
3796         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3797         mutex_unlock(&mvm->mutex);
3798
3799         return err;
3800 }
3801 #endif
3802
3803 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3804                                    struct ieee80211_vif *vif,
3805                                    struct ieee80211_channel_switch *chsw)
3806 {
3807         /* By implementing this operation, we prevent mac80211 from
3808          * starting its own channel switch timer, so that we can call
3809          * ieee80211_chswitch_done() ourselves at the right time
3810          * (which is when the absence time event starts).
3811          */
3812
3813         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3814                            "dummy channel switch op\n");
3815 }
3816
3817 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3818                                       struct ieee80211_vif *vif,
3819                                       struct ieee80211_channel_switch *chsw)
3820 {
3821         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3822         struct ieee80211_vif *csa_vif;
3823         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3824         u32 apply_time;
3825         int ret;
3826
3827         mutex_lock(&mvm->mutex);
3828
3829         mvmvif->csa_failed = false;
3830
3831         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3832                            chsw->chandef.center_freq1);
3833
3834         iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3835
3836         switch (vif->type) {
3837         case NL80211_IFTYPE_AP:
3838                 csa_vif =
3839                         rcu_dereference_protected(mvm->csa_vif,
3840                                                   lockdep_is_held(&mvm->mutex));
3841                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3842                               "Another CSA is already in progress")) {
3843                         ret = -EBUSY;
3844                         goto out_unlock;
3845                 }
3846
3847                 /* we still didn't unblock tx. prevent new CS meanwhile */
3848                 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
3849                                               lockdep_is_held(&mvm->mutex))) {
3850                         ret = -EBUSY;
3851                         goto out_unlock;
3852                 }
3853
3854                 rcu_assign_pointer(mvm->csa_vif, vif);
3855
3856                 if (WARN_ONCE(mvmvif->csa_countdown,
3857                               "Previous CSA countdown didn't complete")) {
3858                         ret = -EBUSY;
3859                         goto out_unlock;
3860                 }
3861
3862                 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
3863
3864                 break;
3865         case NL80211_IFTYPE_STATION:
3866                 if (mvmvif->lqm_active)
3867                         iwl_mvm_send_lqm_cmd(vif,
3868                                              LQM_CMD_OPERATION_STOP_MEASUREMENT,
3869                                              0, 0);
3870
3871                 /* Schedule the time event to a bit before beacon 1,
3872                  * to make sure we're in the new channel when the
3873                  * GO/AP arrives.
3874                  */
3875                 apply_time = chsw->device_timestamp +
3876                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3877                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3878
3879                 if (chsw->block_tx)
3880                         iwl_mvm_csa_client_absent(mvm, vif);
3881
3882                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3883                                             apply_time);
3884                 if (mvmvif->bf_data.bf_enabled) {
3885                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3886                         if (ret)
3887                                 goto out_unlock;
3888                 }
3889
3890                 break;
3891         default:
3892                 break;
3893         }
3894
3895         mvmvif->ps_disabled = true;
3896
3897         ret = iwl_mvm_power_update_ps(mvm);
3898         if (ret)
3899                 goto out_unlock;
3900
3901         /* we won't be on this channel any longer */
3902         iwl_mvm_teardown_tdls_peers(mvm);
3903
3904 out_unlock:
3905         mutex_unlock(&mvm->mutex);
3906
3907         return ret;
3908 }
3909
3910 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3911                                        struct ieee80211_vif *vif)
3912 {
3913         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3914         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3915         int ret;
3916
3917         mutex_lock(&mvm->mutex);
3918
3919         if (mvmvif->csa_failed) {
3920                 mvmvif->csa_failed = false;
3921                 ret = -EIO;
3922                 goto out_unlock;
3923         }
3924
3925         if (vif->type == NL80211_IFTYPE_STATION) {
3926                 struct iwl_mvm_sta *mvmsta;
3927
3928                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3929                                                           mvmvif->ap_sta_id);
3930
3931                 if (WARN_ON(!mvmsta)) {
3932                         ret = -EIO;
3933                         goto out_unlock;
3934                 }
3935
3936                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3937
3938                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3939
3940                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3941                 if (ret)
3942                         goto out_unlock;
3943
3944                 iwl_mvm_stop_session_protection(mvm, vif);
3945         }
3946
3947         mvmvif->ps_disabled = false;
3948
3949         ret = iwl_mvm_power_update_ps(mvm);
3950
3951 out_unlock:
3952         mutex_unlock(&mvm->mutex);
3953
3954         return ret;
3955 }
3956
3957 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3958                               struct ieee80211_vif *vif, u32 queues, bool drop)
3959 {
3960         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3961         struct iwl_mvm_vif *mvmvif;
3962         struct iwl_mvm_sta *mvmsta;
3963         struct ieee80211_sta *sta;
3964         int i;
3965         u32 msk = 0;
3966
3967         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3968                 return;
3969
3970         /* Make sure we're done with the deferred traffic before flushing */
3971         if (iwl_mvm_is_dqa_supported(mvm))
3972                 flush_work(&mvm->add_stream_wk);
3973
3974         mutex_lock(&mvm->mutex);
3975         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3976
3977         /* flush the AP-station and all TDLS peers */
3978         for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
3979                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3980                                                 lockdep_is_held(&mvm->mutex));
3981                 if (IS_ERR_OR_NULL(sta))
3982                         continue;
3983
3984                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3985                 if (mvmsta->vif != vif)
3986                         continue;
3987
3988                 /* make sure only TDLS peers or the AP are flushed */
3989                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3990
3991                 msk |= mvmsta->tfd_queue_msk;
3992         }
3993
3994         if (drop) {
3995                 if (iwl_mvm_flush_tx_path(mvm, msk, 0))
3996                         IWL_ERR(mvm, "flush request fail\n");
3997                 mutex_unlock(&mvm->mutex);
3998         } else {
3999                 mutex_unlock(&mvm->mutex);
4000
4001                 /* this can take a while, and we may need/want other operations
4002                  * to succeed while doing this, so do it without the mutex held
4003                  */
4004                 iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
4005         }
4006 }
4007
4008 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
4009                                   struct survey_info *survey)
4010 {
4011         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4012         int ret;
4013
4014         memset(survey, 0, sizeof(*survey));
4015
4016         /* only support global statistics right now */
4017         if (idx != 0)
4018                 return -ENOENT;
4019
4020         if (!fw_has_capa(&mvm->fw->ucode_capa,
4021                          IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4022                 return -ENOENT;
4023
4024         mutex_lock(&mvm->mutex);
4025
4026         if (mvm->ucode_loaded) {
4027                 ret = iwl_mvm_request_statistics(mvm, false);
4028                 if (ret)
4029                         goto out;
4030         }
4031
4032         survey->filled = SURVEY_INFO_TIME |
4033                          SURVEY_INFO_TIME_RX |
4034                          SURVEY_INFO_TIME_TX |
4035                          SURVEY_INFO_TIME_SCAN;
4036         survey->time = mvm->accu_radio_stats.on_time_rf +
4037                        mvm->radio_stats.on_time_rf;
4038         do_div(survey->time, USEC_PER_MSEC);
4039
4040         survey->time_rx = mvm->accu_radio_stats.rx_time +
4041                           mvm->radio_stats.rx_time;
4042         do_div(survey->time_rx, USEC_PER_MSEC);
4043
4044         survey->time_tx = mvm->accu_radio_stats.tx_time +
4045                           mvm->radio_stats.tx_time;
4046         do_div(survey->time_tx, USEC_PER_MSEC);
4047
4048         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4049                             mvm->radio_stats.on_time_scan;
4050         do_div(survey->time_scan, USEC_PER_MSEC);
4051
4052         ret = 0;
4053  out:
4054         mutex_unlock(&mvm->mutex);
4055         return ret;
4056 }
4057
4058 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
4059                                        struct ieee80211_vif *vif,
4060                                        struct ieee80211_sta *sta,
4061                                        struct station_info *sinfo)
4062 {
4063         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4064         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4065         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4066
4067         if (mvmsta->avg_energy) {
4068                 sinfo->signal_avg = mvmsta->avg_energy;
4069                 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG);
4070         }
4071
4072         if (!fw_has_capa(&mvm->fw->ucode_capa,
4073                          IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4074                 return;
4075
4076         /* if beacon filtering isn't on mac80211 does it anyway */
4077         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
4078                 return;
4079
4080         if (!vif->bss_conf.assoc)
4081                 return;
4082
4083         mutex_lock(&mvm->mutex);
4084
4085         if (mvmvif->ap_sta_id != mvmsta->sta_id)
4086                 goto unlock;
4087
4088         if (iwl_mvm_request_statistics(mvm, false))
4089                 goto unlock;
4090
4091         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
4092                            mvmvif->beacon_stats.accu_num_beacons;
4093         sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
4094         if (mvmvif->beacon_stats.avg_signal) {
4095                 /* firmware only reports a value after RXing a few beacons */
4096                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
4097                 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4098         }
4099  unlock:
4100         mutex_unlock(&mvm->mutex);
4101 }
4102
4103 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
4104                                         struct ieee80211_vif *vif,
4105                                         const struct ieee80211_event *event)
4106 {
4107 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...)    \
4108         do {                                                    \
4109                 if ((_cnt) && --(_cnt))                         \
4110                         break;                                  \
4111                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
4112         } while (0)
4113
4114         struct iwl_fw_dbg_trigger_tlv *trig;
4115         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
4116
4117         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
4118                 return;
4119
4120         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
4121         trig_mlme = (void *)trig->data;
4122         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4123                 return;
4124
4125         if (event->u.mlme.data == ASSOC_EVENT) {
4126                 if (event->u.mlme.status == MLME_DENIED)
4127                         CHECK_MLME_TRIGGER(mvm, trig, buf,
4128                                            trig_mlme->stop_assoc_denied,
4129                                            "DENIED ASSOC: reason %d",
4130                                             event->u.mlme.reason);
4131                 else if (event->u.mlme.status == MLME_TIMEOUT)
4132                         CHECK_MLME_TRIGGER(mvm, trig, buf,
4133                                            trig_mlme->stop_assoc_timeout,
4134                                            "ASSOC TIMEOUT");
4135         } else if (event->u.mlme.data == AUTH_EVENT) {
4136                 if (event->u.mlme.status == MLME_DENIED)
4137                         CHECK_MLME_TRIGGER(mvm, trig, buf,
4138                                            trig_mlme->stop_auth_denied,
4139                                            "DENIED AUTH: reason %d",
4140                                            event->u.mlme.reason);
4141                 else if (event->u.mlme.status == MLME_TIMEOUT)
4142                         CHECK_MLME_TRIGGER(mvm, trig, buf,
4143                                            trig_mlme->stop_auth_timeout,
4144                                            "AUTH TIMEOUT");
4145         } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4146                 CHECK_MLME_TRIGGER(mvm, trig, buf,
4147                                    trig_mlme->stop_rx_deauth,
4148                                    "DEAUTH RX %d", event->u.mlme.reason);
4149         } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4150                 CHECK_MLME_TRIGGER(mvm, trig, buf,
4151                                    trig_mlme->stop_tx_deauth,
4152                                    "DEAUTH TX %d", event->u.mlme.reason);
4153         }
4154 #undef CHECK_MLME_TRIGGER
4155 }
4156
4157 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4158                                           struct ieee80211_vif *vif,
4159                                           const struct ieee80211_event *event)
4160 {
4161         struct iwl_fw_dbg_trigger_tlv *trig;
4162         struct iwl_fw_dbg_trigger_ba *ba_trig;
4163
4164         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4165                 return;
4166
4167         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4168         ba_trig = (void *)trig->data;
4169         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4170                 return;
4171
4172         if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
4173                 return;
4174
4175         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4176                                     "BAR received from %pM, tid %d, ssn %d",
4177                                     event->u.ba.sta->addr, event->u.ba.tid,
4178                                     event->u.ba.ssn);
4179 }
4180
4181 static void
4182 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
4183                                      struct ieee80211_vif *vif,
4184                                      const struct ieee80211_event *event)
4185 {
4186         struct iwl_fw_dbg_trigger_tlv *trig;
4187         struct iwl_fw_dbg_trigger_ba *ba_trig;
4188
4189         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4190                 return;
4191
4192         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4193         ba_trig = (void *)trig->data;
4194         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4195                 return;
4196
4197         if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
4198                 return;
4199
4200         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4201                                     "Frame from %pM timed out, tid %d",
4202                                     event->u.ba.sta->addr, event->u.ba.tid);
4203 }
4204
4205 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4206                                        struct ieee80211_vif *vif,
4207                                        const struct ieee80211_event *event)
4208 {
4209         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4210
4211         switch (event->type) {
4212         case MLME_EVENT:
4213                 iwl_mvm_event_mlme_callback(mvm, vif, event);
4214                 break;
4215         case BAR_RX_EVENT:
4216                 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4217                 break;
4218         case BA_FRAME_TIMEOUT:
4219                 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
4220                 break;
4221         default:
4222                 break;
4223         }
4224 }
4225
4226 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
4227                                      struct iwl_mvm_internal_rxq_notif *notif,
4228                                      u32 size)
4229 {
4230         u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
4231         int ret;
4232
4233         lockdep_assert_held(&mvm->mutex);
4234
4235         /* TODO - remove a000 disablement when we have RXQ config API */
4236         if (!iwl_mvm_has_new_rx_api(mvm) || iwl_mvm_has_new_tx_api(mvm))
4237                 return;
4238
4239         notif->cookie = mvm->queue_sync_cookie;
4240
4241         if (notif->sync)
4242                 atomic_set(&mvm->queue_sync_counter,
4243                            mvm->trans->num_rx_queues);
4244
4245         ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size);
4246         if (ret) {
4247                 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
4248                 goto out;
4249         }
4250
4251         if (notif->sync)
4252                 ret = wait_event_timeout(mvm->rx_sync_waitq,
4253                                          atomic_read(&mvm->queue_sync_counter) == 0,
4254                                          HZ);
4255         WARN_ON_ONCE(!ret);
4256
4257 out:
4258         atomic_set(&mvm->queue_sync_counter, 0);
4259         mvm->queue_sync_cookie++;
4260 }
4261
4262 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
4263 {
4264         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4265         struct iwl_mvm_internal_rxq_notif data = {
4266                 .type = IWL_MVM_RXQ_EMPTY,
4267                 .sync = 1,
4268         };
4269
4270         mutex_lock(&mvm->mutex);
4271         iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
4272         mutex_unlock(&mvm->mutex);
4273 }
4274
4275 const struct ieee80211_ops iwl_mvm_hw_ops = {
4276         .tx = iwl_mvm_mac_tx,
4277         .ampdu_action = iwl_mvm_mac_ampdu_action,
4278         .start = iwl_mvm_mac_start,
4279         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4280         .stop = iwl_mvm_mac_stop,
4281         .add_interface = iwl_mvm_mac_add_interface,
4282         .remove_interface = iwl_mvm_mac_remove_interface,
4283         .config = iwl_mvm_mac_config,
4284         .prepare_multicast = iwl_mvm_prepare_multicast,
4285         .configure_filter = iwl_mvm_configure_filter,
4286         .config_iface_filter = iwl_mvm_config_iface_filter,
4287         .bss_info_changed = iwl_mvm_bss_info_changed,
4288         .hw_scan = iwl_mvm_mac_hw_scan,
4289         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4290         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4291         .sta_state = iwl_mvm_mac_sta_state,
4292         .sta_notify = iwl_mvm_mac_sta_notify,
4293         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4294         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4295         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4296         .sta_rc_update = iwl_mvm_sta_rc_update,
4297         .conf_tx = iwl_mvm_mac_conf_tx,
4298         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4299         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4300         .flush = iwl_mvm_mac_flush,
4301         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4302         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4303         .set_key = iwl_mvm_mac_set_key,
4304         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4305         .remain_on_channel = iwl_mvm_roc,
4306         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4307         .add_chanctx = iwl_mvm_add_chanctx,
4308         .remove_chanctx = iwl_mvm_remove_chanctx,
4309         .change_chanctx = iwl_mvm_change_chanctx,
4310         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4311         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4312         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4313
4314         .start_ap = iwl_mvm_start_ap_ibss,
4315         .stop_ap = iwl_mvm_stop_ap_ibss,
4316         .join_ibss = iwl_mvm_start_ap_ibss,
4317         .leave_ibss = iwl_mvm_stop_ap_ibss,
4318
4319         .set_tim = iwl_mvm_set_tim,
4320
4321         .channel_switch = iwl_mvm_channel_switch,
4322         .pre_channel_switch = iwl_mvm_pre_channel_switch,
4323         .post_channel_switch = iwl_mvm_post_channel_switch,
4324
4325         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4326         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4327         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4328
4329         .event_callback = iwl_mvm_mac_event_callback,
4330
4331         .sync_rx_queues = iwl_mvm_sync_rx_queues,
4332
4333         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4334
4335 #ifdef CONFIG_PM_SLEEP
4336         /* look at d3.c */
4337         .suspend = iwl_mvm_suspend,
4338         .resume = iwl_mvm_resume,
4339         .set_wakeup = iwl_mvm_set_wakeup,
4340         .set_rekey_data = iwl_mvm_set_rekey_data,
4341 #if IS_ENABLED(CONFIG_IPV6)
4342         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4343 #endif
4344         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4345 #endif
4346         .get_survey = iwl_mvm_mac_get_survey,
4347         .sta_statistics = iwl_mvm_mac_sta_statistics,
4348 };